[AVR32] GPIO API implementation

Arch-neutral GPIO calls for AVR32. GPIO IRQ support written by
David Brownell.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/include/asm-avr32/arch-at32ap/gpio.h b/include/asm-avr32/arch-at32ap/gpio.h
new file mode 100644
index 000000000000..fcb756bdaa8e
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/gpio.h
@@ -0,0 +1,27 @@
+#ifndef __ASM_AVR32_ARCH_GPIO_H
+#define __ASM_AVR32_ARCH_GPIO_H
+
+#include <linux/compiler.h>
+#include <asm/irq.h>
+
+
+/* Arch-neutral GPIO API */
+int __must_check gpio_request(unsigned int gpio, const char *label);
+void gpio_free(unsigned int gpio);
+
+int gpio_direction_input(unsigned int gpio);
+int gpio_direction_output(unsigned int gpio);
+int gpio_get_value(unsigned int gpio);
+void gpio_set_value(unsigned int gpio, int value);
+
+static inline int gpio_to_irq(unsigned int gpio)
+{
+        return gpio + GPIO_IRQ_BASE;
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+        return irq - GPIO_IRQ_BASE;
+}
+
+#endif /* __ASM_AVR32_ARCH_GPIO_H */