[ARM] 4984/1: S3C24XX: Do not assert nRSTOUT on BAST over suspend.
Change GPA21 to output over reset so that nRSTOUT is not
asserted whilst suspended.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index 6617547..b45fb65 100644
--- a/arch/arm/mach-s3c2410/mach-bast.c
+++ b/arch/arm/mach-s3c2410/mach-bast.c
@@ -16,6 +16,7 @@
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
+#include <linux/sysdev.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/dm9000.h>
@@ -236,6 +237,36 @@
/* NAND Flash on BAST board */
+#ifdef CONFIG_PM
+static int bast_pm_suspend(struct sys_device *sd, pm_message_t state)
+{
+ /* ensure that an nRESET is not generated on resume. */
+ s3c2410_gpio_setpin(S3C2410_GPA21, 1);
+ s3c2410_gpio_cfgpin(S3C2410_GPA21, S3C2410_GPA21_OUT);
+
+ return 0;
+}
+
+static int bast_pm_resume(struct sys_device *sd)
+{
+ s3c2410_gpio_cfgpin(S3C2410_GPA21, S3C2410_GPA21_nRSTOUT);
+ return 0;
+}
+
+#else
+#define bast_pm_suspend NULL
+#define bast_pm_resume NULL
+#endif
+
+static struct sysdev_class bast_pm_sysclass = {
+ set_kset_name("mach-bast"),
+ .suspend = bast_pm_suspend,
+ .resume = bast_pm_resume,
+};
+
+static struct sys_device bast_pm_sysdev = {
+ .cls = &bast_pm_sysclass,
+};
static int smartmedia_map[] = { 0 };
static int chip0_map[] = { 1 };
@@ -586,6 +617,9 @@
static void __init bast_init(void)
{
+ sysdev_class_register(&bast_pm_sysclass);
+ sysdev_register(&bast_pm_sysdev);
+
s3c24xx_fb_set_platdata(&bast_fb_info);
platform_add_devices(bast_devices, ARRAY_SIZE(bast_devices));
}