2 # I2C subsystem configuration
8 default y if MACH_OMAP_H3 || MACH_OMAP_OSK
10 I2C (pronounce: I-square-C) is a slow serial bus protocol used in
11 many micro controller applications and developed by Philips. SMBus,
12 or System Management Bus is a subset of the I2C protocol. More
13 information is contained in the directory <file:Documentation/i2c/>,
14 especially in the file called "summary" there.
16 Both I2C and SMBus are supported here. You will need this for
17 hardware sensors support, and also for Video For Linux support.
19 If you want I2C support, you should say Y here and also to the
20 specific driver for your bus adapter(s) below.
22 This I2C support can also be built as a module. If so, the module
23 will be called i2c-core.
32 tristate "I2C device interface"
34 Say Y here to use i2c-* device files, usually found in the /dev
35 directory on your system. They make it possible to have user-space
36 programs use the I2C bus. Information on how to do this is
37 contained in the file <file:Documentation/i2c/dev-interface>.
39 This support is also available as a module. If so, the module
40 will be called i2c-dev.
42 config I2C_HELPER_AUTO
43 bool "Autoselect pertinent helper modules"
46 Some I2C bus drivers require so-called "I2C algorithm" modules
47 to work. These are basically software-only abstractions of generic
48 I2C interfaces. This option will autoselect them so that you don't
51 Unselect this only if you need to enable additional helper
52 modules, for example for use with external I2C bus drivers.
56 source drivers/i2c/algos/Kconfig
57 source drivers/i2c/busses/Kconfig
58 source drivers/i2c/chips/Kconfig
61 bool "I2C Core debugging messages"
63 Say Y here if you want the I2C core to produce a bunch of debug
64 messages to the system log. Select this if you are having a
65 problem with I2C support and want to see more of what is going on.
68 bool "I2C Algorithm debugging messages"
70 Say Y here if you want the I2C algorithm drivers to produce a bunch
71 of debug messages to the system log. Select this if you are having
72 a problem with I2C support and want to see more of what is going
76 bool "I2C Bus debugging messages"
78 Say Y here if you want the I2C bus drivers to produce a bunch of
79 debug messages to the system log. Select this if you are having
80 a problem with I2C support and want to see more of what is going
84 bool "I2C Chip debugging messages"
86 Say Y here if you want the I2C chip drivers to produce a bunch of
87 debug messages to the system log. Select this if you are having
88 a problem with I2C support and want to see more of what is going