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authorBen Dooks <ben-linux@fluff.org>2008-04-16 00:06:14 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-04-17 17:04:37 +0100
commit6ddc4b07a2669bdb8b90e3e12fb1ccfb6dc4a99c (patch)
tree0e1db580eb31c2f1bd705ad3c84c6926b5976ad0 /arch/arm/mach-s3c2410/mach-bast.c
parentc63fc13f806b11576e8c41969d4b1598dd261d80 (diff)
[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>
Diffstat (limited to 'arch/arm/mach-s3c2410/mach-bast.c')
-rw-r--r--arch/arm/mach-s3c2410/mach-bast.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/mach-bast.c b/arch/arm/mach-s3c2410/mach-bast.c
index 66175471fff..b45fb65889d 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 @@ static struct platform_device bast_device_nor = {
/* 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_map_io(void)
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));
}