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authorShawn Guo <shawn.guo@linaro.org>2013-01-18 08:57:46 +0100
committerLinus Walleij <linus.walleij@linaro.org>2013-01-22 10:23:35 +0100
commit6a89a314ab107a12af08c71420c19a37a30fc2d3 (patch)
tree391e95b100c796b0983f903e1cfc4f9dd2cfd2e4 /drivers/gpio
parentgpio: fix warning of 'struct gpio_chip' declaration (diff)
downloadlinux-6a89a314ab107a12af08c71420c19a37a30fc2d3.tar.xz
linux-6a89a314ab107a12af08c71420c19a37a30fc2d3.zip
gpio: devm_gpio_* support should not depend on GPIOLIB
Some architectures (e.g. blackfin) provide gpio API without requiring GPIOLIB support (ARCH_WANT_OPTIONAL_GPIOLIB). devm_gpio_* functions should also work for these architectures, since they do not really depend on GPIOLIB. Add a new option GPIO_DEVRES (enabled by default) to control the build of devres.c. It also removes the empty version of devm_gpio_* functions for !GENERIC_GPIO build from linux/gpio.h, and moves the function declarations from asm-generic/gpio.h into linux/gpio.h. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/Kconfig3
-rw-r--r--drivers/gpio/Makefile3
2 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 682de754d63f..d9729322b1c7 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -30,6 +30,9 @@ config ARCH_REQUIRE_GPIOLIB
Selecting this from the architecture code will cause the gpiolib
code to always get built in.
+config GPIO_DEVRES
+ def_bool y
+ depends on HAS_IOMEM
menuconfig GPIOLIB
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index c5aebd008dde..36ca605ff038 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -2,7 +2,8 @@
ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG
-obj-$(CONFIG_GPIOLIB) += gpiolib.o devres.o
+obj-$(CONFIG_GPIO_DEVRES) += devres.o
+obj-$(CONFIG_GPIOLIB) += gpiolib.o
obj-$(CONFIG_OF_GPIO) += gpiolib-of.o
obj-$(CONFIG_GPIO_ACPI) += gpiolib-acpi.o