From 8ce14a221efe8ef9019e2c5b1e06fcd329e66d78 Mon Sep 17 00:00:00 2001
From: Joonyoung Shim <jy0922.shim@samsung.com>
Date: Fri, 1 Oct 2010 11:24:39 +0900
Subject: ARM: SAMSUNG: Add common samsung_gpiolib_to_irq function

This patch adds a common callback for gpio_to_irq() for external and
gpio interrupts for Samsung SoCs.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
[kgene.kim@samsung.com: moved samsung_gpiolib_to_irq() for s3c24xx build]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
---
 arch/arm/mach-s5pc100/gpiolib.c | 31 ++++++++-----------------------
 1 file changed, 8 insertions(+), 23 deletions(-)

(limited to 'arch/arm/mach-s5pc100')

diff --git a/arch/arm/mach-s5pc100/gpiolib.c b/arch/arm/mach-s5pc100/gpiolib.c
index 5811578ad4e4..def4ff83e051 100644
--- a/arch/arm/mach-s5pc100/gpiolib.c
+++ b/arch/arm/mach-s5pc100/gpiolib.c
@@ -61,25 +61,6 @@
  * L3	8	4Bit	None
  */
 
-static int s5pc100_gpiolib_to_eint(struct gpio_chip *chip, unsigned int offset)
-{
-	int base;
-
-	base = chip->base - S5PC100_GPH0(0);
-	if (base == 0)
-		return IRQ_EINT(offset);
-	base = chip->base - S5PC100_GPH1(0);
-	if (base == 0)
-		return IRQ_EINT(8 + offset);
-	base = chip->base - S5PC100_GPH2(0);
-	if (base == 0)
-		return IRQ_EINT(16 + offset);
-	base = chip->base - S5PC100_GPH3(0);
-	if (base == 0)
-		return IRQ_EINT(24 + offset);
-	return -EINVAL;
-}
-
 static struct s3c_gpio_cfg gpio_cfg = {
 	.set_config	= s3c_gpio_setcfg_s3c64xx_4bit,
 	.set_pull	= s3c_gpio_setpull_updown,
@@ -223,38 +204,42 @@ static struct s3c_gpio_chip s5pc100_gpio_chips[] = {
 	}, {
 		.base	= S5PC100_GPH0_BASE,
 		.config	= &gpio_cfg_eint,
+		.irq_base = IRQ_EINT(0),
 		.chip	= {
 			.base	= S5PC100_GPH0(0),
 			.ngpio	= S5PC100_GPIO_H0_NR,
 			.label	= "GPH0",
-			.to_irq = s5pc100_gpiolib_to_eint,
+			.to_irq = samsung_gpiolib_to_irq,
 		},
 	}, {
 		.base	= S5PC100_GPH1_BASE,
 		.config	= &gpio_cfg_eint,
+		.irq_base = IRQ_EINT(8),
 		.chip	= {
 			.base	= S5PC100_GPH1(0),
 			.ngpio	= S5PC100_GPIO_H1_NR,
 			.label	= "GPH1",
-			.to_irq = s5pc100_gpiolib_to_eint,
+			.to_irq = samsung_gpiolib_to_irq,
 		},
 	}, {
 		.base	= S5PC100_GPH2_BASE,
 		.config	= &gpio_cfg_eint,
+		.irq_base = IRQ_EINT(16),
 		.chip	= {
 			.base	= S5PC100_GPH2(0),
 			.ngpio	= S5PC100_GPIO_H2_NR,
 			.label	= "GPH2",
-			.to_irq = s5pc100_gpiolib_to_eint,
+			.to_irq = samsung_gpiolib_to_irq,
 		},
 	}, {
 		.base	= S5PC100_GPH3_BASE,
 		.config	= &gpio_cfg_eint,
+		.irq_base = IRQ_EINT(24),
 		.chip	= {
 			.base	= S5PC100_GPH3(0),
 			.ngpio	= S5PC100_GPIO_H3_NR,
 			.label	= "GPH3",
-			.to_irq = s5pc100_gpiolib_to_eint,
+			.to_irq = samsung_gpiolib_to_irq,
 		},
 	}, {
 		.base	= S5PC100_GPI_BASE,
-- 
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