[ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series

this patch registers the wakeup irq, sets a gpio pin to indicate the
status of system for suspend/resume operations, and adds the machine to
the supported machines for use with the simtec-pm

Signed-off-by: David Anders <danders@amltd.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c2410/s3c2410-pm.c b/arch/arm/mach-s3c2410/s3c2410-pm.c
index 3080d25a12de..e51d76669512 100644
--- a/arch/arm/mach-s3c2410/s3c2410-pm.c
+++ b/arch/arm/mach-s3c2410/s3c2410-pm.c
@@ -29,6 +29,8 @@
 #include <asm/hardware.h>
 #include <asm/io.h>
 
+#include <asm/mach-types.h>
+
 #include <asm/arch/regs-gpio.h>
 
 #include "cpu.h"
@@ -49,6 +51,10 @@ static void s3c2410_pm_prepare(void)
 
         DBG("GSTATUS3 0x%08x\n", __raw_readl(S3C2410_GSTATUS3));
         DBG("GSTATUS4 0x%08x\n", __raw_readl(S3C2410_GSTATUS4));
+
+        if ( machine_is_aml_m5900() )
+                s3c2410_gpio_setpin(S3C2410_GPF2, 1);
+
 }
 
 int s3c2410_pm_resume(struct sys_device *dev)
@@ -61,6 +67,9 @@ int s3c2410_pm_resume(struct sys_device *dev)
         tmp &= S3C2410_GSTATUS2_OFFRESET;
         __raw_writel(tmp, S3C2410_GSTATUS2);
 
+        if ( machine_is_aml_m5900() )
+                s3c2410_gpio_setpin(S3C2410_GPF2, 0);
+
         return 0;
 }