diff options
| author | Ben Dooks <ben-linux@fluff.org> | 2008-04-16 00:06:14 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-04-17 17:04:37 +0100 |
| commit | 6ddc4b07a2669bdb8b90e3e12fb1ccfb6dc4a99c (patch) | |
| tree | 0e1db580eb31c2f1bd705ad3c84c6926b5976ad0 | |
| parent | c63fc13f806b11576e8c41969d4b1598dd261d80 (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>
| -rw-r--r-- | arch/arm/mach-s3c2410/mach-bast.c | 34 |
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)); } |