drivers/i2c/Kconfig

   1 #
   2 # I2C subsystem configuration
   3 #
   4
   5 menuconfig I2C
   6         tristate "I2C support"
   7         depends on HAS_IOMEM
   8         ---help---
   9           I2C (pronounce: I-square-C) is a slow serial bus protocol used in
  10           many micro controller applications and developed by Philips.  SMBus,
  11           or System Management Bus is a subset of the I2C protocol.  More
  12           information is contained in the directory <file:Documentation/i2c/>,
  13           especially in the file called "summary" there.
  14
  15           Both I2C and SMBus are supported here. You will need this for
  16           hardware sensors support, and also for Video For Linux support.
  17
  18           If you want I2C support, you should say Y here and also to the
  19           specific driver for your bus adapter(s) below.
  20
  21           This I2C support can also be built as a module.  If so, the module
  22           will be called i2c-core.
  23
  24 if I2C
  25
  26 config I2C_BOARDINFO
  27         boolean
  28         default y
  29
  30 config I2C_COMPAT
  31         boolean "Enable compatibility bits for old user-space"
  32         default y
  33         help
  34           Say Y here if you intend to run lm-sensors 3.1.1 or older, or any
  35           other user-space package which expects i2c adapters to be class
  36           devices. If you don't know, say Y.
  37
  38 config I2C_CHARDEV
  39         tristate "I2C device interface"
  40         help
  41           Say Y here to use i2c-* device files, usually found in the /dev
  42           directory on your system.  They make it possible to have user-space
  43           programs use the I2C bus.  Information on how to do this is
  44           contained in the file <file:Documentation/i2c/dev-interface>.
  45
  46           This support is also available as a module.  If so, the module
  47           will be called i2c-dev.
  48
  49 config I2C_HELPER_AUTO
  50         bool "Autoselect pertinent helper modules"
  51         default y
  52         help
  53           Some I2C bus drivers require so-called "I2C algorithm" modules
  54           to work. These are basically software-only abstractions of generic
  55           I2C interfaces. This option will autoselect them so that you don't
  56           have to care.
  57
  58           Unselect this only if you need to enable additional helper
  59           modules, for example for use with external I2C bus drivers.
  60
  61           In doubt, say Y.
  62
  63 source drivers/i2c/algos/Kconfig
  64 source drivers/i2c/busses/Kconfig
  65 source drivers/i2c/chips/Kconfig
  66
  67 config I2C_DEBUG_CORE
  68         bool "I2C Core debugging messages"
  69         help
  70           Say Y here if you want the I2C core to produce a bunch of debug
  71           messages to the system log.  Select this if you are having a
  72           problem with I2C support and want to see more of what is going on.
  73
  74 config I2C_DEBUG_ALGO
  75         bool "I2C Algorithm debugging messages"
  76         help
  77           Say Y here if you want the I2C algorithm drivers to produce a bunch
  78           of debug messages to the system log.  Select this if you are having
  79           a problem with I2C support and want to see more of what is going
  80           on.
  81
  82 config I2C_DEBUG_BUS
  83         bool "I2C Bus debugging messages"
  84         help
  85           Say Y here if you want the I2C bus drivers to produce a bunch of
  86           debug messages to the system log.  Select this if you are having
  87           a problem with I2C support and want to see more of what is going
  88           on.
  89
  90 config I2C_DEBUG_CHIP
  91         bool "I2C Chip debugging messages"
  92         help
  93           Say Y here if you want the I2C chip drivers to produce a bunch of
  94           debug messages to the system log.  Select this if you are having
  95           a problem with I2C support and want to see more of what is going
  96           on.
  97
  98 endif # I2C