From 15df0f3302fdecaa97da0b95d72b3a9a59be8692 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 20 Aug 2008 23:03:24 -0700
Subject: [PATCH] sparc: Add GPIO layer support.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/Kconfig            |  6 ++++++
 arch/sparc/include/asm/gpio.h | 36 +++++++++++++++++++++++++++++++++++
 arch/sparc64/Kconfig          |  6 ++++++
 3 files changed, 48 insertions(+)
 create mode 100644 arch/sparc/include/asm/gpio.h

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index a214002114e..cb1dd356b27 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 00000000000..a0e3ac0af59
--- /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 923a98959fa..489b6912fa0 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
 
-- 
2.41.1