sparc: Add GPIO layer support.

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 48 insertions, 0 deletions

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index a214002114ed..cb1dd356b278 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -20,6 +20,11 @@ config GENERIC_ISA_DMA
         bool
         default y
 
+config GENERIC_GPIO
+        bool
+        help
+          Generic GPIO API support
+
 config ARCH_NO_VIRT_TO_BUS
         def_bool y
 
@@ -69,6 +74,7 @@ config SPARC
         select HAVE_OPROFILE
         select HAVE_ARCH_KGDB if !SMP
         select HAVE_ARCH_TRACEHOOK
+        select ARCH_WANT_OPTIONAL_GPIOLIB
 
 # Identify this as a Sparc32 build
 config SPARC32
diff --git a/arch/sparc/include/asm/gpio.h b/arch/sparc/include/asm/gpio.h
new file mode 100644
index 000000000000..a0e3ac0af599
--- /dev/null
+++ b/arch/sparc/include/asm/gpio.h
@@ -0,0 +1,36 @@
+#ifndef __ASM_SPARC_GPIO_H
+#define __ASM_SPARC_GPIO_H
+
+#include <linux/errno.h>
+#include <asm-generic/gpio.h>
+
+#ifdef CONFIG_GPIOLIB
+
+static inline int gpio_get_value(unsigned int gpio)
+{
+        return __gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned int gpio, int value)
+{
+        __gpio_set_value(gpio, value);
+}
+
+static inline int gpio_cansleep(unsigned int gpio)
+{
+        return __gpio_cansleep(gpio);
+}
+
+static inline int gpio_to_irq(unsigned int gpio)
+{
+        return -ENOSYS;
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+        return -EINVAL;
+}
+
+#endif /* CONFIG_GPIOLIB */
+
+#endif /* __ASM_SPARC_GPIO_H */
diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index 923a98959fa7..489b6912fa09 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -18,6 +18,7 @@ config SPARC64
         select HAVE_ARCH_KGDB
         select USE_GENERIC_SMP_HELPERS if SMP
         select HAVE_ARCH_TRACEHOOK
+        select ARCH_WANT_OPTIONAL_GPIOLIB
 
 config GENERIC_TIME
         bool
@@ -31,6 +32,11 @@ config GENERIC_CLOCKEVENTS
         bool
         default y
 
+config GENERIC_GPIO
+        bool
+        help
+          Generic GPIO API support
+
 config 64BIT
         def_bool y