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| author | Peter Huewe <peterhuewe@gmx.de> | 2012-10-05 22:23:52 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2012-10-05 22:23:52 +0200 |
| commit | 3ddb59d4bcaeca8109ac5eb8ad17368e940ac05e (patch) | |
| tree | c54c0687cf031ed816e5935ac2a1b2a39a877977 /drivers | |
| parent | 230da094352869ac36bca524a294deb7bb3dd876 (diff) | |
| download | lwn-3ddb59d4bcaeca8109ac5eb8ad17368e940ac05e.tar.gz lwn-3ddb59d4bcaeca8109ac5eb8ad17368e940ac05e.zip | |
i2c: Make I2C available on UML
Remove the global dependency of the I2C subsystem on HAS_IOMEM and
move the dependency to the i2c/busses submenu, with an exception for
i2c-stub.
The generic I2C part does not need to have HAS_IOMEM set and thus now
becomes available in UML, so the I2C subsystem can now be used, e.g.
by the i2c-stub driver, for development of I2C device drivers.
[JD: Some adjustments.]
[Heiko Carstens: Keep I2C disabled on S390.]
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/Kconfig | 17 | ||||
| -rw-r--r-- | drivers/i2c/busses/Kconfig | 14 |
2 files changed, 17 insertions, 14 deletions
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 5a3bb3d738d8..2f8c76becc6b 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -4,7 +4,7 @@ menuconfig I2C tristate "I2C support" - depends on HAS_IOMEM + depends on !S390 select RT_MUTEXES ---help--- I2C (pronounce: I-squared-C) is a slow serial bus protocol used in @@ -49,6 +49,7 @@ config I2C_CHARDEV config I2C_MUX tristate "I2C bus multiplexing support" + depends on HAS_IOMEM help Say Y here if you want the I2C core to support the ability to handle multiplexed I2C bus topologies, by presenting each @@ -86,6 +87,19 @@ config I2C_SMBUS source drivers/i2c/algos/Kconfig source drivers/i2c/busses/Kconfig +config I2C_STUB + tristate "I2C/SMBus Test Stub" + depends on EXPERIMENTAL && m + default 'n' + help + This module may be useful to developers of SMBus client drivers, + especially for certain kinds of sensor chips. + + If you do build this module, be sure to read the notes and warnings + in <file:Documentation/i2c/i2c-stub>. + + If you don't know what to do here, definitely say N. + config I2C_DEBUG_CORE bool "I2C Core debugging messages" help @@ -103,6 +117,7 @@ config I2C_DEBUG_ALGO config I2C_DEBUG_BUS bool "I2C Bus debugging messages" + depends on HAS_IOMEM help Say Y here if you want the I2C bus drivers to produce a bunch of debug messages to the system log. Select this if you are having diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 42d9fdd63de0..8eed054e3293 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -3,6 +3,7 @@ # menu "I2C Hardware Bus support" + depends on HAS_IOMEM comment "PC SMBus host controller drivers" depends on PCI @@ -849,19 +850,6 @@ config I2C_SIBYTE help Supports the SiByte SOC on-chip I2C interfaces (2 channels). -config I2C_STUB - tristate "I2C/SMBus Test Stub" - depends on EXPERIMENTAL && m - default 'n' - help - This module may be useful to developers of SMBus client drivers, - especially for certain kinds of sensor chips. - - If you do build this module, be sure to read the notes and warnings - in <file:Documentation/i2c/i2c-stub>. - - If you don't know what to do here, definitely say N. - config SCx200_I2C tristate "NatSemi SCx200 I2C using GPIO pins (DEPRECATED)" depends on SCx200_GPIO |