blob: 96867347bcbfffa0639d0df93b08cbbb86c23b68 [file] [log] [blame]
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"
Martin Schwidefskye25df122007-05-10 15:45:57 +02007 depends on HAS_IOMEM
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 ---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
Jan Engelhardt16538e62007-05-01 23:26:34 +020024if I2C
25
David Brownell9c1600e2007-05-01 23:26:31 +020026config I2C_BOARDINFO
27 boolean
David Brownell9c1600e2007-05-01 23:26:31 +020028 default y
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030config I2C_CHARDEV
31 tristate "I2C device interface"
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 help
33 Say Y here to use i2c-* device files, usually found in the /dev
34 directory on your system. They make it possible to have user-space
35 programs use the I2C bus. Information on how to do this is
36 contained in the file <file:Documentation/i2c/dev-interface>.
37
38 This support is also available as a module. If so, the module
39 will be called i2c-dev.
40
41source drivers/i2c/algos/Kconfig
42source drivers/i2c/busses/Kconfig
43source drivers/i2c/chips/Kconfig
44
45config I2C_DEBUG_CORE
46 bool "I2C Core debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 help
48 Say Y here if you want the I2C core to produce a bunch of debug
49 messages to the system log. Select this if you are having a
50 problem with I2C support and want to see more of what is going on.
51
52config I2C_DEBUG_ALGO
53 bool "I2C Algorithm debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070054 help
55 Say Y here if you want the I2C algorithm drivers to produce a bunch
56 of debug messages to the system log. Select this if you are having
57 a problem with I2C support and want to see more of what is going
58 on.
59
60config I2C_DEBUG_BUS
61 bool "I2C Bus debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 help
63 Say Y here if you want the I2C bus drivers to produce a bunch of
64 debug messages to the system log. Select this if you are having
65 a problem with I2C support and want to see more of what is going
66 on.
67
68config I2C_DEBUG_CHIP
69 bool "I2C Chip debugging messages"
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 help
71 Say Y here if you want the I2C chip drivers to produce a bunch of
72 debug messages to the system log. Select this if you are having
73 a problem with I2C support and want to see more of what is going
74 on.
75
Jan Engelhardt16538e62007-05-01 23:26:34 +020076endif # I2C