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authorPeter Huewe <peterhuewe@gmx.de>2012-10-06 00:23:52 +0400
committerJean Delvare <khali@endymion.delvare>2012-10-06 00:23:52 +0400
commit3ddb59d4bcaeca8109ac5eb8ad17368e940ac05e (patch)
treec54c0687cf031ed816e5935ac2a1b2a39a877977 /drivers/i2c/Kconfig
parent230da094352869ac36bca524a294deb7bb3dd876 (diff)
downloadlinux-3ddb59d4bcaeca8109ac5eb8ad17368e940ac05e.tar.xz
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/i2c/Kconfig')
-rw-r--r--drivers/i2c/Kconfig17
1 files changed, 16 insertions, 1 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