Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/drivers/i2c/Kconfig

  1 #
  2 # I2C subsystem configuration
  3 #
  4 
  5 menu "I2C support"
  6 
  7 config I2C
  8         tristate "I2C support"
  9         select RT_MUTEXES
 10         ---help---
 11           I2C (pronounce: I-squared-C) is a slow serial bus protocol used in
 12           many micro controller applications and developed by Philips.  SMBus,
 13           or System Management Bus is a subset of the I2C protocol.  More
 14           information is contained in the directory <file:Documentation/i2c/>,
 15           especially in the file called "summary" there.
 16 
 17           Both I2C and SMBus are supported here. You will need this for
 18           hardware sensors support, and also for Video For Linux support.
 19 
 20           If you want I2C support, you should say Y here and also to the
 21           specific driver for your bus adapter(s) below.
 22 
 23           This I2C support can also be built as a module.  If so, the module
 24           will be called i2c-core.
 25 
 26 config ACPI_I2C_OPREGION
 27         bool "ACPI I2C Operation region support"
 28         depends on I2C=y && ACPI
 29         default y
 30         help
 31           Say Y here if you want to enable ACPI I2C operation region support.
 32           Operation Regions allow firmware (BIOS) code to access I2C slave devices,
 33           such as smart batteries through an I2C host controller driver.
 34 
 35 if I2C
 36 
 37 config I2C_BOARDINFO
 38         boolean
 39         default y
 40 
 41 config I2C_COMPAT
 42         boolean "Enable compatibility bits for old user-space"
 43         default y
 44         help
 45           Say Y here if you intend to run lm-sensors 3.1.1 or older, or any
 46           other user-space package which expects i2c adapters to be class
 47           devices. If you don't know, say Y.
 48 
 49 config I2C_CHARDEV
 50         tristate "I2C device interface"
 51         help
 52           Say Y here to use i2c-* device files, usually found in the /dev
 53           directory on your system.  They make it possible to have user-space
 54           programs use the I2C bus.  Information on how to do this is
 55           contained in the file <file:Documentation/i2c/dev-interface>.
 56 
 57           This support is also available as a module.  If so, the module 
 58           will be called i2c-dev.
 59 
 60 config I2C_MUX
 61         tristate "I2C bus multiplexing support"
 62         depends on HAS_IOMEM
 63         help
 64           Say Y here if you want the I2C core to support the ability to
 65           handle multiplexed I2C bus topologies, by presenting each
 66           multiplexed segment as a I2C adapter.
 67 
 68           This support is also available as a module.  If so, the module
 69           will be called i2c-mux.
 70 
 71 source drivers/i2c/muxes/Kconfig
 72 
 73 config I2C_HELPER_AUTO
 74         bool "Autoselect pertinent helper modules"
 75         default y
 76         help
 77           Some I2C bus drivers require so-called "I2C algorithm" modules
 78           to work. These are basically software-only abstractions of generic
 79           I2C interfaces. This option will autoselect them so that you don't
 80           have to care.
 81 
 82           Unselect this only if you need to enable additional helper
 83           modules, for example for use with external I2C bus drivers.
 84 
 85           In doubt, say Y.
 86 
 87 config I2C_SMBUS
 88         tristate "SMBus-specific protocols" if !I2C_HELPER_AUTO
 89         help
 90           Say Y here if you want support for SMBus extensions to the I2C
 91           specification. At the moment, the only supported extension is
 92           the SMBus alert protocol.
 93 
 94           This support is also available as a module.  If so, the module
 95           will be called i2c-smbus.
 96 
 97 source drivers/i2c/algos/Kconfig
 98 source drivers/i2c/busses/Kconfig
 99 
100 config I2C_STUB
101         tristate "I2C/SMBus Test Stub"
102         depends on m
103         default 'n'
104         help
105           This module may be useful to developers of SMBus client drivers,
106           especially for certain kinds of sensor chips.
107 
108           If you do build this module, be sure to read the notes and warnings
109           in <file:Documentation/i2c/i2c-stub>.
110 
111           If you don't know what to do here, definitely say N.
112 
113 config I2C_DEBUG_CORE
114         bool "I2C Core debugging messages"
115         help
116           Say Y here if you want the I2C core to produce a bunch of debug
117           messages to the system log.  Select this if you are having a
118           problem with I2C support and want to see more of what is going on.
119 
120 config I2C_DEBUG_ALGO
121         bool "I2C Algorithm debugging messages"
122         help
123           Say Y here if you want the I2C algorithm drivers to produce a bunch
124           of debug messages to the system log.  Select this if you are having
125           a problem with I2C support and want to see more of what is going
126           on.
127 
128 config I2C_DEBUG_BUS
129         bool "I2C Bus debugging messages"
130         depends on HAS_IOMEM
131         help
132           Say Y here if you want the I2C bus drivers to produce a bunch of
133           debug messages to the system log.  Select this if you are having
134           a problem with I2C support and want to see more of what is going
135           on.
136 
137 endif # I2C
138 
139 endmenu

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us