Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
---
arch/arm/mach-at91/include/mach/gpio.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/mach-at91/include/mach/gpio.h b/arch/arm/mach-at91/include/mach/gpio.h
index 3533bf9..fa695a6 100644
--- a/arch/arm/mach-at91/include/mach/gpio.h
+++ b/arch/arm/mach-at91/include/mach/gpio.h
@@ -22,6 +22,17 @@
/* these pin numbers double as IRQ numbers, like AT91xxx_ID_* values */
+#define ARCH_NR_GPIOS 256
+
+static inline int gpio_is_valid(int gpio)
+{
+ if (gpio < 1)
+ return 0;
+ if (gpio < ARCH_NR_GPIOS)
+ return 1;
+ return 0;
+}
+
#define AT91_PIN_PA0 (PIN_BASE + 0x00 + 0)
#define AT91_PIN_PA1 (PIN_BASE + 0x00 + 1)
#define AT91_PIN_PA2 (PIN_BASE + 0x00 + 2)
--
1.7.10.4
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