Lines Matching full:i2c
3 # I2C subsystem configuration
6 menu "I2C support"
8 config I2C config
9 tristate "I2C support"
13 I2C (pronounce: I-squared-C) is a slow serial bus protocol used in
15 or System Management Bus is a subset of the I2C protocol. More
16 information is contained in the directory <file:Documentation/i2c/>,
19 Both I2C and SMBus are supported here. You will need this for
22 If you want I2C support, you should say Y here and also to the
25 This I2C support can also be built as a module. If so, the module
26 will be called i2c-core.
29 bool "ACPI I2C Operation region support"
30 depends on I2C=y && ACPI
33 Say Y here if you want to enable ACPI I2C operation region support.
34 Operation Regions allow firmware (BIOS) code to access I2C slave devices,
35 such as smart batteries through an I2C host controller driver.
37 if I2C
48 other user-space package which expects i2c adapters to be class
52 tristate "I2C device interface"
54 Say Y here to use i2c-* device files, usually found in the /dev
56 programs use the I2C bus. Information on how to do this is
57 contained in the file <file:Documentation/i2c/dev-interface.rst>.
60 will be called i2c-dev.
63 tristate "I2C bus multiplexing support"
65 Say Y here if you want the I2C core to support the ability to
66 handle multiplexed I2C bus topologies, by presenting each
67 multiplexed segment as a I2C adapter.
70 will be called i2c-mux.
72 source "drivers/i2c/muxes/Kconfig"
75 tristate "I2C Address Translator (ATR) support" if COMPILE_TEST
77 Enable support for I2C Address Translator (ATR) chips.
79 An ATR allows accessing multiple I2C busses from a single
81 i2c-muxes do.
87 Some I2C bus drivers require so-called "I2C algorithm" modules
89 I2C interfaces. This option will autoselect them so that you don't
93 modules, for example for use with external I2C bus drivers.
100 Say Y here if you want support for SMBus extensions to the I2C
105 will be called i2c-smbus.
107 source "drivers/i2c/algos/Kconfig"
108 source "drivers/i2c/busses/Kconfig"
111 tristate "I2C/SMBus Test Stub"
118 in <file:Documentation/i2c/i2c-stub.rst>.
123 bool "I2C slave support"
125 This enables Linux to act as an I2C slave device. Note that your I2C
127 read Documentation/i2c/slave-interface.rst for further details.
132 tristate "I2C eeprom slave driver"
134 This backend makes Linux behave like an I2C EEPROM. Please read
135 Documentation/i2c/slave-eeprom-backend.rst for further details.
138 tristate "I2C eeprom testunit driver"
140 This backend can be used to trigger test cases for I2C bus masters
143 Documentation/i2c/slave-testunit-backend.rst for further details.
148 bool "I2C Core debugging messages"
150 Say Y here if you want the I2C core to produce a bunch of debug
152 problem with I2C support and want to see more of what is going on.
155 bool "I2C Algorithm debugging messages"
157 Say Y here if you want the I2C algorithm drivers to produce a bunch
159 a problem with I2C support and want to see more of what is going
163 bool "I2C Bus debugging messages"
166 Say Y here if you want the I2C bus drivers to produce a bunch of
168 a problem with I2C support and want to see more of what is going
171 endif # I2C