Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...

[linux-2.6] / arch / arm / plat-s3c24xx / gpio.c

diff --git a/arch/arm/plat-s3c24xx/gpio.c b/arch/arm/plat-s3c24xx/gpio.c
index 7cc6faec25d974b98c8ff84ff244bc60835316fb..ee99dcc7f0bd2793524da7f90980264967f3ffcc 100644 (file)
--- a/arch/arm/plat-s3c24xx/gpio.c
+++ b/arch/arm/plat-s3c24xx/gpio.c
@@ -199,3 +199,19 @@ int s3c2410_gpio_getirq(unsigned int pin)
 }
 
 EXPORT_SYMBOL(s3c2410_gpio_getirq);
+
+int s3c2410_gpio_irq2pin(unsigned int irq)
+{
+       if (irq >= IRQ_EINT0 && irq <= IRQ_EINT3)
+               return S3C2410_GPF0 + (irq - IRQ_EINT0);
+
+       if (irq >= IRQ_EINT4 && irq <= IRQ_EINT7)
+               return S3C2410_GPF4 + (irq - IRQ_EINT4);
+
+       if (irq >= IRQ_EINT8 && irq <= IRQ_EINT23)
+               return S3C2410_GPG0 + (irq - IRQ_EINT8);
+
+       return -EINVAL;
+}
+
+EXPORT_SYMBOL(s3c2410_gpio_irq2pin);