[ARM] 3803/2: S3C24XX: PM split S3C2410 out of core pm

Remove the S3C2410 specific items out of the
core PM code. Add sysdev driver for all the
S3C24XX series that used the S3C2410 PM code.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 14 insertions, 16 deletions

diff --git a/arch/arm/mach-s3c2410/pm.c b/arch/arm/mach-s3c2410/pm.c
index 46dedd37f43..9402583a129 100644
--- a/arch/arm/mach-s3c2410/pm.c
+++ b/arch/arm/mach-s3c2410/pm.c
@@ -142,7 +142,7 @@ static struct sleep_save uart_save[] = {
 
 extern void printascii(const char *);
 
-static void pm_dbg(const char *fmt, ...)
+void pm_dbg(const char *fmt, ...)
 {
 	va_list va;
 	char buff[256];
@@ -486,6 +486,9 @@ static void s3c2410_pm_configure_extint(void)
 	}
 }
 
+void (*pm_cpu_prep)(void);
+void (*pm_cpu_sleep)(void);
+
 #define any_allowed(mask, allow) (((mask) & (allow)) != (allow))
 
 /* s3c2410_pm_enter
@@ -496,7 +499,6 @@ static void s3c2410_pm_configure_extint(void)
 static int s3c2410_pm_enter(suspend_state_t state)
 {
 	unsigned long regs_save[16];
-	unsigned long tmp;
 
 	/* ensure the debug is initialised (if enabled) */
 
@@ -504,6 +506,11 @@ static int s3c2410_pm_enter(suspend_state_t state)
 
 	DBG("s3c2410_pm_enter(%d)\n", state);
 
+	if (pm_cpu_prep == NULL || pm_cpu_sleep == NULL) {
+		printk(KERN_ERR PFX "error: no cpu sleep functions set\n");
+		return -EINVAL;
+	}
+
 	if (state != PM_SUSPEND_MEM) {
 		printk(KERN_ERR PFX "error: only PM_SUSPEND_MEM supported\n");
 		return -EINVAL;
@@ -531,13 +538,6 @@ static int s3c2410_pm_enter(suspend_state_t state)
 
 	DBG("s3c2410_sleep_save_phys=0x%08lx\n", s3c2410_sleep_save_phys);
 
-	/* ensure at least GESTATUS3 has the resume address */
-
-	__raw_writel(virt_to_phys(s3c2410_cpu_resume), S3C2410_GSTATUS3);
-
-	DBG("GSTATUS3 0x%08x\n", __raw_readl(S3C2410_GSTATUS3));
-	DBG("GSTATUS4 0x%08x\n", __raw_readl(S3C2410_GSTATUS4));
-
 	/* save all necessary core registers not covered by the drivers */
 
 	s3c2410_pm_do_save(gpio_save, ARRAY_SIZE(gpio_save));
@@ -558,6 +558,10 @@ static int s3c2410_pm_enter(suspend_state_t state)
 
 	__raw_writel(__raw_readl(S3C2410_EINTPEND), S3C2410_EINTPEND);
 
+	/* call cpu specific preperation */
+
+	pm_cpu_prep();
+
 	/* flush cache back to ram */
 
 	flush_cache_all();
@@ -574,19 +578,13 @@ static int s3c2410_pm_enter(suspend_state_t state)
 
 	if (s3c2410_cpu_save(regs_save) == 0) {
 		flush_cache_all();
-		s3c2410_cpu_suspend();
+		pm_cpu_sleep();
 	}
 
 	/* restore the cpu state */
 
 	cpu_init();
 
-	/* unset the return-from-sleep flag, to ensure reset */
-
-	tmp = __raw_readl(S3C2410_GSTATUS2);
-	tmp &= S3C2410_GSTATUS2_OFFRESET;
-	__raw_writel(tmp, S3C2410_GSTATUS2);
-
 	/* restore the system state */
 
 	s3c2410_pm_do_restore_core(core_save, ARRAY_SIZE(core_save));