diff options
| author | Ben Dooks <ben-linux@fluff.org> | 2006-09-16 00:04:23 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-25 10:25:21 +0100 |
| commit | 58095d7f39edc919cd3c63c6109ad282e7085da1 (patch) | |
| tree | d0e7f7ef1a5a4b68dafbbc8e83eb57abd581bb83 /arch/arm/mach-s3c2410/pm.c | |
| parent | 1e582fc73781da47eddd90c75bf97f191e4f450f (diff) | |
| download | blackbird-op-linux-58095d7f39edc919cd3c63c6109ad282e7085da1.tar.gz blackbird-op-linux-58095d7f39edc919cd3c63c6109ad282e7085da1.zip | |
[ARM] 3802/1: S3C24XX: PM tidy up cache flushing
Change to using flush_cache_all() in pm.c and
also remove the need to flush the cache in the
PM code.
This changes the sleep.S code to have an entry
to store the registers for resume, and then a
second entry (after the caches are cleaned)
to do the suspend and resume.
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/pm.c')
| -rw-r--r-- | arch/arm/mach-s3c2410/pm.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/arch/arm/mach-s3c2410/pm.c b/arch/arm/mach-s3c2410/pm.c index 164a5b5847d7..46dedd37f438 100644 --- a/arch/arm/mach-s3c2410/pm.c +++ b/arch/arm/mach-s3c2410/pm.c @@ -35,6 +35,7 @@ #include <linux/ioport.h> #include <linux/delay.h> +#include <asm/cacheflush.h> #include <asm/hardware.h> #include <asm/io.h> @@ -52,14 +53,6 @@ unsigned long s3c_pm_flags; -/* cache functions from arch/arm/mm/proc-arm920.S */ - -#ifndef CONFIG_CPU_DCACHE_WRITETHROUGH -extern void arm920_flush_kern_cache_all(void); -#else -static void arm920_flush_kern_cache_all(void) { } -#endif - #define PFX "s3c24xx-pm: " static struct sleep_save core_save[] = { @@ -567,7 +560,7 @@ static int s3c2410_pm_enter(suspend_state_t state) /* flush cache back to ram */ - arm920_flush_kern_cache_all(); + flush_cache_all(); s3c2410_pm_check_store(); @@ -575,7 +568,14 @@ static int s3c2410_pm_enter(suspend_state_t state) __raw_writel(0x00, S3C2410_CLKCON); /* turn off clocks over sleep */ - s3c2410_cpu_suspend(regs_save); + /* s3c2410_cpu_save will also act as our return point from when + * we resume as it saves its own register state, so use the return + * code to differentiate return from save and return from sleep */ + + if (s3c2410_cpu_save(regs_save) == 0) { + flush_cache_all(); + s3c2410_cpu_suspend(); + } /* restore the cpu state */ |
