ARM: S5PC100: Add support for gpio interrupt

This patch moves support for gpio interrupts from plat-s5pc1xx to
mach-s5pc100 directory.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

3 files changed, 44 insertions, 45 deletions

diff --git a/arch/arm/mach-s5pc100/Makefile b/arch/arm/mach-s5pc100/Makefile
index 9b52d2af013f..6e3f57c39c97 100644
--- a/arch/arm/mach-s5pc100/Makefile
+++ b/arch/arm/mach-s5pc100/Makefile
@@ -11,7 +11,7 @@ obj-				:=
 
 # Core support for S5PC100 system
 
-obj-$(CONFIG_CPU_S5PC100)       += cpu.o init.o clock.o gpiolib.o
+obj-$(CONFIG_CPU_S5PC100)       += cpu.o init.o clock.o gpiolib.o irq-gpio.o
 obj-$(CONFIG_CPU_S5PC100)       += setup-i2c0.o
 
 # Helper and device support
diff --git a/arch/arm/mach-s5pc100/gpiolib.c b/arch/arm/mach-s5pc100/gpiolib.c
index 494a53b10479..88dd913c86d4 100644
--- a/arch/arm/mach-s5pc100/gpiolib.c
+++ b/arch/arm/mach-s5pc100/gpiolib.c
@@ -387,7 +387,6 @@ extern void s5pc100_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
 
 static __init void s5pc100_gpiolib_link(struct s3c_gpio_chip *chip)
 {
-#if 0
         /* Interrupt */
         if (chip->config == &gpio_cfg) {
                 int i, irq;
@@ -401,9 +400,9 @@ static __init void s5pc100_gpiolib_link(struct s3c_gpio_chip *chip)
                         set_irq_handler(irq, handle_level_irq);
                         set_irq_flags(irq, IRQF_VALID);
                 }
-        } else if (chip->config == &gpio_cfg_eint)
+        } else if (chip->config == &gpio_cfg_eint) {
                 chip->chip.to_irq = s5pc100_gpiolib_to_eint;
-#endif
+        }
 }
 
 static __init int s5pc100_gpiolib_init(void)
@@ -419,10 +418,10 @@ static __init int s5pc100_gpiolib_init(void)
 
         samsung_gpiolib_add_4bit_chips(s5pc100_gpio_chips,
                                        ARRAY_SIZE(s5pc100_gpio_chips));
-#if 0
+
         /* Interrupt */
         set_irq_chained_handler(IRQ_GPIOINT, s5pc100_irq_gpioint_handler);
-#endif
+
         return 0;
 }
 core_initcall(s5pc100_gpiolib_init);
diff --git a/arch/arm/plat-s5pc1xx/irq-gpio.c b/arch/arm/mach-s5pc100/irq-gpio.c
index fecca7a679b0..2bf86c18bc73 100644
--- a/arch/arm/plat-s5pc1xx/irq-gpio.c
+++ b/arch/arm/mach-s5pc100/irq-gpio.c
@@ -1,9 +1,9 @@
 /*
- * arch/arm/plat-s5pc1xx/irq-gpio.c
+ * arch/arm/mach-s5pc100/irq-gpio.c
  *
  * Copyright (C) 2009 Samsung Electronics
  *
- * S5PC1XX - Interrupt handling for IRQ_GPIO${group}(x)
+ * S5PC100 - Interrupt handling for IRQ_GPIO${group}(x)
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -19,7 +19,7 @@
 #include <mach/map.h>
 #include <plat/gpio-cfg.h>
 
-#define S5PC1XX_GPIOREG(x)              (S5PC1XX_VA_GPIO + (x))
+#define S5P_GPIOREG(x)          (S5P_VA_GPIO + (x))
 
 #define CON_OFFSET                      0x700
 #define MASK_OFFSET                     0x900
@@ -49,7 +49,7 @@ static int group_to_pend_offset(int group)
         return group << 2;
 }
 
-static int s5pc1xx_get_start(unsigned int group)
+static int s5pc100_get_start(unsigned int group)
 {
         switch (group) {
         case 0: return S5PC100_GPIO_A0_START;
@@ -80,7 +80,7 @@ static int s5pc1xx_get_start(unsigned int group)
         return -EINVAL;
 }
 
-static int s5pc1xx_get_group(unsigned int irq)
+static int s5pc100_get_group(unsigned int irq)
 {
         irq -= S3C_IRQ_GPIO(0);
 
@@ -134,67 +134,67 @@ static int s5pc1xx_get_group(unsigned int irq)
         return -EINVAL;
 }
 
-static int s5pc1xx_get_offset(unsigned int irq)
+static int s5pc100_get_offset(unsigned int irq)
 {
         struct gpio_chip *chip = get_irq_data(irq);
         return irq - S3C_IRQ_GPIO(chip->base);
 }
 
-static void s5pc1xx_gpioint_ack(unsigned int irq)
+static void s5pc100_gpioint_ack(unsigned int irq)
 {
         int group, offset, pend_offset;
         unsigned int value;
 
-        group = s5pc1xx_get_group(irq);
-        offset = s5pc1xx_get_offset(irq);
+        group = s5pc100_get_group(irq);
+        offset = s5pc100_get_offset(irq);
         pend_offset = group_to_pend_offset(group);
 
-        value = __raw_readl(S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset);
+        value = __raw_readl(S5P_GPIOREG(PEND_OFFSET) + pend_offset);
         value |= 1 << offset;
-        __raw_writel(value, S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset);
+        __raw_writel(value, S5P_GPIOREG(PEND_OFFSET) + pend_offset);
 }
 
-static void s5pc1xx_gpioint_mask(unsigned int irq)
+static void s5pc100_gpioint_mask(unsigned int irq)
 {
         int group, offset, mask_offset;
         unsigned int value;
 
-        group = s5pc1xx_get_group(irq);
-        offset = s5pc1xx_get_offset(irq);
+        group = s5pc100_get_group(irq);
+        offset = s5pc100_get_offset(irq);
         mask_offset = group_to_mask_offset(group);
 
-        value = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+        value = __raw_readl(S5P_GPIOREG(MASK_OFFSET) + mask_offset);
         value |= 1 << offset;
-        __raw_writel(value, S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+        __raw_writel(value, S5P_GPIOREG(MASK_OFFSET) + mask_offset);
 }
 
-static void s5pc1xx_gpioint_unmask(unsigned int irq)
+static void s5pc100_gpioint_unmask(unsigned int irq)
 {
         int group, offset, mask_offset;
         unsigned int value;
 
-        group = s5pc1xx_get_group(irq);
-        offset = s5pc1xx_get_offset(irq);
+        group = s5pc100_get_group(irq);
+        offset = s5pc100_get_offset(irq);
         mask_offset = group_to_mask_offset(group);
 
-        value = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+        value = __raw_readl(S5P_GPIOREG(MASK_OFFSET) + mask_offset);
         value &= ~(1 << offset);
-        __raw_writel(value, S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+        __raw_writel(value, S5P_GPIOREG(MASK_OFFSET) + mask_offset);
 }
 
-static void s5pc1xx_gpioint_mask_ack(unsigned int irq)
+static void s5pc100_gpioint_mask_ack(unsigned int irq)
 {
-        s5pc1xx_gpioint_mask(irq);
-        s5pc1xx_gpioint_ack(irq);
+        s5pc100_gpioint_mask(irq);
+        s5pc100_gpioint_ack(irq);
 }
 
-static int s5pc1xx_gpioint_set_type(unsigned int irq, unsigned int type)
+static int s5pc100_gpioint_set_type(unsigned int irq, unsigned int type)
 {
         int group, offset, con_offset;
         unsigned int value;
 
-        group = s5pc1xx_get_group(irq);
-        offset = s5pc1xx_get_offset(irq);
+        group = s5pc100_get_group(irq);
+        offset = s5pc100_get_offset(irq);
         con_offset = group_to_con_offset(group);
 
         switch (type) {
@@ -221,24 +221,24 @@ static int s5pc1xx_gpioint_set_type(unsigned int irq, unsigned int type)
         }
 
 
-        value = __raw_readl(S5PC1XX_GPIOREG(CON_OFFSET) + con_offset);
+        value = __raw_readl(S5P_GPIOREG(CON_OFFSET) + con_offset);
         value &= ~(0xf << (offset * 0x4));
         value |= (type << (offset * 0x4));
-        __raw_writel(value, S5PC1XX_GPIOREG(CON_OFFSET) + con_offset);
+        __raw_writel(value, S5P_GPIOREG(CON_OFFSET) + con_offset);
 
         return 0;
 }
 
-struct irq_chip s5pc1xx_gpioint = {
+struct irq_chip s5pc100_gpioint = {
         .name           = "GPIO",
-        .ack            = s5pc1xx_gpioint_ack,
-        .mask           = s5pc1xx_gpioint_mask,
-        .mask_ack       = s5pc1xx_gpioint_mask_ack,
-        .unmask         = s5pc1xx_gpioint_unmask,
-        .set_type       = s5pc1xx_gpioint_set_type,
+        .ack            = s5pc100_gpioint_ack,
+        .mask           = s5pc100_gpioint_mask,
+        .mask_ack       = s5pc100_gpioint_mask_ack,
+        .unmask         = s5pc100_gpioint_unmask,
+        .set_type       = s5pc100_gpioint_set_type,
 };
 
-void s5pc1xx_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
+void s5pc100_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
 {
         int group, offset, pend_offset, mask_offset;
         int real_irq, group_end;
@@ -248,17 +248,17 @@ void s5pc1xx_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc)
 
         for (group = 0; group < group_end; group++) {
                 pend_offset = group_to_pend_offset(group);
-                pend = __raw_readl(S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset);
+                pend = __raw_readl(S5P_GPIOREG(PEND_OFFSET) + pend_offset);
                 if (!pend)
                         continue;
 
                 mask_offset = group_to_mask_offset(group);
-                mask = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset);
+                mask = __raw_readl(S5P_GPIOREG(MASK_OFFSET) + mask_offset);
                 pend &= ~mask;
 
                 for (offset = 0; offset < 8; offset++) {
                         if (pend & (1 << offset)) {
-                                real_irq = s5pc1xx_get_start(group) + offset;
+                                real_irq = s5pc100_get_start(group) + offset;
                                 generic_handle_irq(S3C_IRQ_GPIO(real_irq));
                         }
                 }