diff options
Diffstat (limited to 'drivers/i2c/Kconfig')
| -rw-r--r-- | drivers/i2c/Kconfig | 91 |
1 files changed, 70 insertions, 21 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 24383afdda7..7b7ea320a25 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -1,13 +1,12 @@ # -# Character device configuration +# I2C subsystem configuration # -menu "I2C support" - -config I2C +menuconfig I2C tristate "I2C support" + select RT_MUTEXES ---help--- - I2C (pronounce: I-square-C) is a slow serial bus protocol used in + I2C (pronounce: I-squared-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/>, @@ -22,9 +21,22 @@ config I2C This I2C support can also be built as a module. If so, the module will be called i2c-core. +if I2C + +config I2C_BOARDINFO + boolean + default y + +config I2C_COMPAT + boolean "Enable compatibility bits for old user-space" + default y + help + Say Y here if you intend to run lm-sensors 3.1.1 or older, or any + other user-space package which expects i2c adapters to be class + devices. If you don't know, say Y. + 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 @@ -34,13 +46,61 @@ config I2C_CHARDEV This support is also available as a module. If so, the module will be called i2c-dev. +config I2C_MUX + tristate "I2C bus multiplexing support" + depends on HAS_IOMEM + help + Say Y here if you want the I2C core to support the ability to + handle multiplexed I2C bus topologies, by presenting each + multiplexed segment as a I2C adapter. + + This support is also available as a module. If so, the module + will be called i2c-mux. + +source drivers/i2c/muxes/Kconfig + +config I2C_HELPER_AUTO + bool "Autoselect pertinent helper modules" + default y + help + Some I2C bus drivers require so-called "I2C algorithm" modules + to work. These are basically software-only abstractions of generic + I2C interfaces. This option will autoselect them so that you don't + have to care. + + Unselect this only if you need to enable additional helper + modules, for example for use with external I2C bus drivers. + + In doubt, say Y. + +config I2C_SMBUS + tristate "SMBus-specific protocols" if !I2C_HELPER_AUTO + help + Say Y here if you want support for SMBus extensions to the I2C + specification. At the moment, the only supported extension is + the SMBus alert protocol. + + This support is also available as a module. If so, the module + will be called i2c-smbus. + source drivers/i2c/algos/Kconfig source drivers/i2c/busses/Kconfig -source drivers/i2c/chips/Kconfig + +config I2C_STUB + tristate "I2C/SMBus Test Stub" + depends on m + default 'n' + help + This module may be useful to developers of SMBus client drivers, + especially for certain kinds of sensor chips. + + If you do build this module, be sure to read the notes and warnings + in <file:Documentation/i2c/i2c-stub>. + + If you don't know what to do here, definitely say N. 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 @@ -48,7 +108,6 @@ config I2C_DEBUG_CORE 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 @@ -57,21 +116,11 @@ config I2C_DEBUG_ALGO config I2C_DEBUG_BUS bool "I2C Bus debugging messages" - depends on I2C + depends on HAS_IOMEM 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 - +endif # I2C |