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>
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 5a3bb3d..2f8c76b 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_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 @@
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_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 42d9fdd..8eed054 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 @@
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