[ARM] 4730/1: S3C2412: Ensure the PWRCFG has the right mode for RTC wake

Ensure that if the RTC IRQ is not selected for wake in the base configuration, then the PWRCFG has the same value set in it. Signed-off-by: Ben Dooks <[email protected]> Signed-off-by: Russell King <[email protected]>
iegor · Jan 28, 2008 · 0baada2 · 0baada2
1 parent 8e3007a
commit 0baada2
Show file tree

Hide file tree

Showing 3 changed files with 27 additions and 1 deletion.
diff --git a/arch/arm/mach-s3c2412/irq.c b/arch/arm/mach-s3c2412/irq.c
@@ -33,6 +33,7 @@
 
 #include <asm/arch/regs-irq.h>
 #include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-power.h>
 
 #include <asm/plat-s3c24xx/cpu.h>
 #include <asm/plat-s3c24xx/irq.h>
@@ -153,6 +154,22 @@ static struct irq_chip s3c2412_irq_cfsdi = {
 	.unmask		= s3c2412_irq_cfsdi_unmask,
 };
 
+static int s3c2412_irq_rtc_wake(unsigned int irqno, unsigned int state)
+{
+	unsigned long pwrcfg;
+
+	pwrcfg = __raw_readl(S3C2412_PWRCFG);
+	if (state)
+		pwrcfg &= ~S3C2412_PWRCFG_RTC_MASKIRQ;
+	else
+		pwrcfg |= S3C2412_PWRCFG_RTC_MASKIRQ;
+	__raw_writel(pwrcfg, S3C2412_PWRCFG);
+
+	return s3c_irq_chip.set_wake(irqno, state);
+}
+
+static struct irq_chip s3c2412_irq_rtc_chip;
+
 static int s3c2412_irq_add(struct sys_device *sysdev)
 {
 	unsigned int irqno;
@@ -173,6 +190,13 @@ static int s3c2412_irq_add(struct sys_device *sysdev)
 		set_irq_flags(irqno, IRQF_VALID);
 	}
 
+	/* change RTC IRQ's set wake method */
+
+	s3c2412_irq_rtc_chip = s3c_irq_chip;
+	s3c2412_irq_rtc_chip.set_wake = s3c2412_irq_rtc_wake;
+
+	set_irq_chip(IRQ_RTC, &s3c2412_irq_rtc_chip);
+
 	return 0;
 }
 

diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c
@@ -187,7 +187,7 @@ struct irq_chip s3c_irq_level_chip = {
 	.set_wake	= s3c_irq_wake
 };
 
-static struct irq_chip s3c_irq_chip = {
+struct irq_chip s3c_irq_chip = {
 	.name		= "s3c",
 	.ack		= s3c_irq_ack,
 	.mask		= s3c_irq_mask,

diff --git a/include/asm-arm/plat-s3c24xx/irq.h b/include/asm-arm/plat-s3c24xx/irq.h
@@ -15,7 +15,9 @@
 
 #define EXTINT_OFF (IRQ_EINT4 - 4)
 
+/* these are exported for arch/arm/mach-* usage */
 extern struct irq_chip s3c_irq_level_chip;
+extern struct irq_chip s3c_irq_chip;
 
 static inline void
 s3c_irqsub_mask(unsigned int irqno, unsigned int parentbit,