[ARM] S3C: Make IRQ_EINT sleep control common

Move the IRQ_EINT sleep control to be available to all
s3c impelmentations. Since s3c_irqext_wake is not large,
place it in arch/arm/plat-s3c/pm.c as adding it to a new
file would be a waste of compile time.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

2 files changed, 26 insertions, 0 deletions

diff --git a/arch/arm/plat-s3c/include/plat/pm.h b/arch/arm/plat-s3c/include/plat/pm.h
index 42c75e6d2ba5..5e27de955da0 100644
--- a/arch/arm/plat-s3c/include/plat/pm.h
+++ b/arch/arm/plat-s3c/include/plat/pm.h
@@ -77,9 +77,11 @@ extern void s3c_pm_do_restore(struct sleep_save *ptr, int count);
 extern void s3c_pm_do_restore_core(struct sleep_save *ptr, int count);
 
 #ifdef CONFIG_PM
+extern int s3c_irqext_wake(unsigned int irqno, unsigned int state);
 extern int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state);
 extern int s3c24xx_irq_resume(struct sys_device *dev);
 #else
+#define s3c_irqext_wake NULL
 #define s3c24xx_irq_suspend NULL
 #define s3c24xx_irq_resume  NULL
 #endif
diff --git a/arch/arm/plat-s3c/pm.c b/arch/arm/plat-s3c/pm.c
index fea58bea973d..7c736deff8ae 100644
--- a/arch/arm/plat-s3c/pm.c
+++ b/arch/arm/plat-s3c/pm.c
@@ -27,6 +27,7 @@
 #include <mach/regs-gpio.h>
 #include <mach/regs-mem.h>
 #include <mach/regs-irq.h>
+#include <asm/irq.h>
 
 #include <plat/pm.h>
 #include <plat/pm-core.h>
@@ -100,6 +101,29 @@ static void s3c_pm_save_uart(void) { }
 static void s3c_pm_restore_uart(void) { }
 #endif
 
+/* The IRQ ext-int code goes here, it is too small to currently bother
+ * with its own file. */
+
+unsigned long s3c_irqwake_intmask       = 0xffffffffL;
+unsigned long s3c_irqwake_eintmask      = 0xffffffffL;
+
+int s3c_irqext_wake(unsigned int irqno, unsigned int state)
+{
+        unsigned long bit = 1L << IRQ_EINT_BIT(irqno);
+
+        if (!(s3c_irqwake_eintallow & bit))
+                return -ENOENT;
+
+        printk(KERN_INFO "wake %s for irq %d\n",
+               state ? "enabled" : "disabled", irqno);
+
+        if (!state)
+                s3c_irqwake_eintmask |= bit;
+        else
+                s3c_irqwake_eintmask &= ~bit;
+
+        return 0;
+}
 
 /* helper functions to save and restore register state */