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>

1 files changed, 8 insertions, 23 deletions

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,