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1da177e4 | 1 | # |
be53f9b2 | 2 | # I2C subsystem configuration |
1da177e4 LT |
3 | # |
4 | ||
16538e6b | 5 | menuconfig I2C |
1da177e4 | 6 | tristate "I2C support" |
e25df120 | 7 | depends on HAS_IOMEM |
1da177e4 LT |
8 | ---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 | ||
16538e6b JE |
24 | if I2C |
25 | ||
9c1600ed DB |
26 | config I2C_BOARDINFO |
27 | boolean | |
9c1600ed DB |
28 | default y |
29 | ||
1da177e4 LT |
30 | config I2C_CHARDEV |
31 | tristate "I2C device interface" | |
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32 | 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 | ||
41 | source drivers/i2c/algos/Kconfig | |
42 | source drivers/i2c/busses/Kconfig | |
43 | source drivers/i2c/chips/Kconfig | |
44 | ||
45 | config I2C_DEBUG_CORE | |
46 | bool "I2C Core debugging messages" | |
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47 | 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 | ||
52 | config I2C_DEBUG_ALGO | |
53 | bool "I2C Algorithm debugging messages" | |
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54 | 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 | ||
60 | config I2C_DEBUG_BUS | |
61 | bool "I2C Bus debugging messages" | |
1da177e4 LT |
62 | 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 | ||
68 | config I2C_DEBUG_CHIP | |
69 | bool "I2C Chip debugging messages" | |
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70 | 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 | ||
16538e6b | 76 | endif # I2C |