From 3356a3d5fe99c7ae997a4cb3981671769789e508 Mon Sep 17 00:00:00 2001
From: Ben Dooks <ben-linux@fluff.org>
Date: Mon, 28 Jan 2008 13:01:33 +0100
Subject: [PATCH] --- yaml --- r: 77502 b: refs/heads/master c:
 c27cb681ac1598352569f75cb19850a12b7ef102 h: refs/heads/master v: v3

---
 [refs]                                        |  2 +-
 trunk/arch/arm/plat-s3c24xx/gpio.c            | 16 ++++++++++++++++
 trunk/include/asm-arm/arch-s3c2410/hardware.h | 11 +++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 04be1c019905..b4d924fb24d6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9b8c0088404778a1291191cf140bcfea082f027c
+refs/heads/master: c27cb681ac1598352569f75cb19850a12b7ef102
diff --git a/trunk/arch/arm/plat-s3c24xx/gpio.c b/trunk/arch/arm/plat-s3c24xx/gpio.c
index 7cc6faec25d9..ee99dcc7f0bd 100644
--- a/trunk/arch/arm/plat-s3c24xx/gpio.c
+++ b/trunk/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);
diff --git a/trunk/include/asm-arm/arch-s3c2410/hardware.h b/trunk/include/asm-arm/arch-s3c2410/hardware.h
index 20509e4540f6..29592c3ebf22 100644
--- a/trunk/include/asm-arm/arch-s3c2410/hardware.h
+++ b/trunk/include/asm-arm/arch-s3c2410/hardware.h
@@ -50,6 +50,17 @@ extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);
 
 extern int s3c2410_gpio_getirq(unsigned int pin);
 
+/* s3c2410_gpio_irq2pin
+ *
+ * turn the given irq number into the corresponding GPIO number
+ *
+ * returns:
+ *	< 0 = no pin
+ *	>=0 = gpio pin number
+*/
+
+extern int s3c2410_gpio_irq2pin(unsigned int irq);
+
 #ifdef CONFIG_CPU_S3C2400
 
 extern int s3c2400_gpio_getirq(unsigned int pin);