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-rw-r--r--drivers/gpio/Kconfig33
-rw-r--r--drivers/gpio/Makefile2
2 files changed, 30 insertions, 5 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index de202db..5a355f8 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -2,15 +2,40 @@
# GPIO infrastructure and expanders
#
-config HAVE_GPIO_LIB
+config ARCH_WANT_OPTIONAL_GPIOLIB
bool
help
+ Select this config option from the architecture Kconfig, if
+ it is possible to use gpiolib on the architecture, but let the
+ user decide whether to actually build it or not.
+ Select this instead of ARCH_REQUIRE_GPIOLIB, if your architecture does
+ not depend on GPIOs being available, but rather let the user
+ decide whether he needs it or not.
+
+config ARCH_REQUIRE_GPIOLIB
+ bool
+ select GPIOLIB
+ help
Platforms select gpiolib if they use this infrastructure
for all their GPIOs, usually starting with ones integrated
into SOC processors.
+ Selecting this from the architecture code will cause the gpiolib
+ code to always get built in.
+
+
+
+menuconfig GPIOLIB
+ bool "GPIO Support"
+ depends on ARCH_WANT_OPTIONAL_GPIOLIB || ARCH_REQUIRE_GPIOLIB
+ select GENERIC_GPIO
+ help
+ This enables GPIO support through the generic GPIO library.
+ You only need to enable this, if you also want to enable
+ one or more of the GPIO expansion card drivers below.
+
+ If unsure, say N.
-menu "GPIO Support"
- depends on HAVE_GPIO_LIB
+if GPIOLIB
config DEBUG_GPIO
bool "Debug GPIO calls"
@@ -116,4 +141,4 @@ config GPIO_MCP23S08
SPI driver for Microchip MCP23S08 I/O expander. This provides
a GPIO interface supporting inputs and outputs.
-endmenu
+endif
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index eeb2f2b..8c45948 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -2,7 +2,7 @@
ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG
-obj-$(CONFIG_HAVE_GPIO_LIB) += gpiolib.o
+obj-$(CONFIG_GPIOLIB) += gpiolib.o
obj-$(CONFIG_GPIO_MAX7301) += max7301.o
obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o