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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
Arthur Othienobe53f9b2006-08-13 23:39:11 +02002# I2C subsystem configuration
Linus Torvalds1da177e2005-04-16 15:20:36 -07003#
4
Jan Engelhardt16538e62007-05-01 23:26:34 +02005menuconfig I2C
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 tristate "I2C support"
7 ---help---
8 I2C (pronounce: I-square-C) is a slow serial bus protocol used in
9 many micro controller applications and developed by Philips. SMBus,
10 or System Management Bus is a subset of the I2C protocol. More
11 information is contained in the directory <file:Documentation/i2c/>,
12 especially in the file called "summary" there.
13
14 Both I2C and SMBus are supported here. You will need this for
15 hardware sensors support, and also for Video For Linux support.
16
17 If you want I2C support, you should say Y here and also to the
18 specific driver for your bus adapter(s) below.
19
20 This I2C support can also be built as a module. If so, the module
21 will be called i2c-core.
22
Jan Engelhardt16538e62007-05-01 23:26:34 +020023if I2C
24
David Brownell9c1600e2007-05-01 23:26:31 +020025config I2C_BOARDINFO
26 boolean
David Brownell9c1600e2007-05-01 23:26:31 +020027 default y
28
Linus Torvalds1da177e2005-04-16 15:20:36 -070029config I2C_CHARDEV
30 tristate "I2C device interface"
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 help
32 Say Y here to use i2c-* device files, usually found in the /dev
33 directory on your system. They make it possible to have user-space
34 programs use the I2C bus. Information on how to do this is
35 contained in the file <file:Documentation/i2c/dev-interface>.
36
37 This support is also available as a module. If so, the module
38 will be called i2c-dev.
39
40source drivers/i2c/algos/Kconfig
41source drivers/i2c/busses/Kconfig
42source drivers/i2c/chips/Kconfig
43
44config I2C_DEBUG_CORE
45 bool "I2C Core debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 help
47 Say Y here if you want the I2C core to produce a bunch of debug
48 messages to the system log. Select this if you are having a
49 problem with I2C support and want to see more of what is going on.
50
51config I2C_DEBUG_ALGO
52 bool "I2C Algorithm debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 help
54 Say Y here if you want the I2C algorithm drivers to produce a bunch
55 of debug messages to the system log. Select this if you are having
56 a problem with I2C support and want to see more of what is going
57 on.
58
59config I2C_DEBUG_BUS
60 bool "I2C Bus debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 help
62 Say Y here if you want the I2C bus drivers to produce a bunch of
63 debug messages to the system log. Select this if you are having
64 a problem with I2C support and want to see more of what is going
65 on.
66
67config I2C_DEBUG_CHIP
68 bool "I2C Chip debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 help
70 Say Y here if you want the I2C chip drivers to produce a bunch of
71 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
73 on.
74
Jan Engelhardt16538e62007-05-01 23:26:34 +020075endif # I2C