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[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>
This commit is contained in:
Ben Dooks 2008-04-16 00:06:14 +01:00 committed by Russell King
parent c63fc13f80
commit 6ddc4b07a2
1 changed files with 34 additions and 0 deletions
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34
arch/arm/mach-s3c2410/mach-bast.c
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@ -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));
}