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-rw-r--r--arch/alpha/Kconfig4
-rw-r--r--arch/alpha/include/asm/gpio.h55
2 files changed, 59 insertions, 0 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 9808998cc073..e3a82775f9da 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -12,6 +12,7 @@ config ALPHA
select GENERIC_IRQ_PROBE
select AUTO_IRQ_AFFINITY if SMP
select GENERIC_IRQ_SHOW
+ select ARCH_WANT_OPTIONAL_GPIOLIB
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
@@ -51,6 +52,9 @@ config GENERIC_CALIBRATE_DELAY
config GENERIC_CMOS_UPDATE
def_bool y
+config GENERIC_GPIO
+ def_bool y
+
config ZONE_DMA
bool
default y
diff --git a/arch/alpha/include/asm/gpio.h b/arch/alpha/include/asm/gpio.h
new file mode 100644
index 000000000000..7dc6a6343c06
--- /dev/null
+++ b/arch/alpha/include/asm/gpio.h
@@ -0,0 +1,55 @@
+/*
+ * Generic GPIO API implementation for Alpha.
+ *
+ * A stright copy of that for PowerPC which was:
+ *
+ * Copyright (c) 2007-2008 MontaVista Software, Inc.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef _ASM_ALPHA_GPIO_H
+#define _ASM_ALPHA_GPIO_H
+
+#include <linux/errno.h>
+#include <asm-generic/gpio.h>
+
+#ifdef CONFIG_GPIOLIB
+
+/*
+ * We don't (yet) implement inlined/rapid versions for on-chip gpios.
+ * Just call 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 __gpio_to_irq(gpio);
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+ return -EINVAL;
+}
+
+#endif /* CONFIG_GPIOLIB */
+
+#endif /* _ASM_ALPHA_GPIO_H */