|  | # | 
|  | # Character device configuration | 
|  | # | 
|  |  | 
|  | menu "I2C support" | 
|  |  | 
|  | config I2C | 
|  | tristate "I2C support" | 
|  | ---help--- | 
|  | I2C (pronounce: I-square-C) is a slow serial bus protocol used in | 
|  | many micro controller applications and developed by Philips.  SMBus, | 
|  | or System Management Bus is a subset of the I2C protocol.  More | 
|  | information is contained in the directory <file:Documentation/i2c/>, | 
|  | especially in the file called "summary" there. | 
|  |  | 
|  | Both I2C and SMBus are supported here. You will need this for | 
|  | hardware sensors support, and also for Video For Linux support. | 
|  |  | 
|  | If you want I2C support, you should say Y here and also to the | 
|  | specific driver for your bus adapter(s) below. | 
|  |  | 
|  | This I2C support can also be built as a module.  If so, the module | 
|  | will be called i2c-core. | 
|  |  | 
|  | config I2C_CHARDEV | 
|  | tristate "I2C device interface" | 
|  | depends on I2C | 
|  | help | 
|  | Say Y here to use i2c-* device files, usually found in the /dev | 
|  | directory on your system.  They make it possible to have user-space | 
|  | programs use the I2C bus.  Information on how to do this is | 
|  | contained in the file <file:Documentation/i2c/dev-interface>. | 
|  |  | 
|  | This support is also available as a module.  If so, the module | 
|  | will be called i2c-dev. | 
|  |  | 
|  | source drivers/i2c/algos/Kconfig | 
|  | source drivers/i2c/busses/Kconfig | 
|  | source drivers/i2c/chips/Kconfig | 
|  |  | 
|  | config I2C_DEBUG_CORE | 
|  | bool "I2C Core debugging messages" | 
|  | depends on I2C | 
|  | help | 
|  | Say Y here if you want the I2C core to produce a bunch of debug | 
|  | messages to the system log.  Select this if you are having a | 
|  | problem with I2C support and want to see more of what is going on. | 
|  |  | 
|  | config I2C_DEBUG_ALGO | 
|  | bool "I2C Algorithm debugging messages" | 
|  | depends on I2C | 
|  | help | 
|  | Say Y here if you want the I2C algorithm drivers to produce a bunch | 
|  | of debug messages to the system log.  Select this if you are having | 
|  | a problem with I2C support and want to see more of what is going | 
|  | on. | 
|  |  | 
|  | config I2C_DEBUG_BUS | 
|  | bool "I2C Bus debugging messages" | 
|  | depends on I2C | 
|  | help | 
|  | Say Y here if you want the I2C bus drivers to produce a bunch of | 
|  | debug messages to the system log.  Select this if you are having | 
|  | a problem with I2C support and want to see more of what is going | 
|  | on. | 
|  |  | 
|  | config I2C_DEBUG_CHIP | 
|  | bool "I2C Chip debugging messages" | 
|  | depends on I2C | 
|  | help | 
|  | Say Y here if you want the I2C chip drivers to produce a bunch of | 
|  | debug messages to the system log.  Select this if you are having | 
|  | a problem with I2C support and want to see more of what is going | 
|  | on. | 
|  |  | 
|  | endmenu | 
|  |  |