ARM / shmobile: Use pm_genpd_poweroff_unused()

Make shmobile use pm_genpd_poweroff_unused() instead of the
open-coded powering off PM domains without devices in use.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Magnus Damm <damm@opensource.se>

arch/arm/mach-shmobile/include/mach/common.h

@@ -12,7 +12,6 @@ extern struct platform_suspend_ops shmobile_suspend_ops;
 struct cpuidle_device;
 extern void (*shmobile_cpuidle_modes[])(void);
 extern void (*shmobile_cpuidle_setup)(struct cpuidle_device *dev);
-extern void (*shmobile_runtime_pm_late_init)(void);
 
 extern void sh7367_init_irq(void);
 extern void sh7367_add_early_devices(void);

arch/arm/mach-shmobile/pm-sh7372.c

@@ -126,17 +126,6 @@ static bool pd_active_wakeup(struct device *dev)
 	return true;
 }
 
-static void sh7372_late_pm_domain_off(void)
-{
-	/* request power down of unused pm domains */
-	queue_work(pm_wq, &sh7372_a4lc.genpd.power_off_work);
-	queue_work(pm_wq, &sh7372_a4mp.genpd.power_off_work);
-	queue_work(pm_wq, &sh7372_d4.genpd.power_off_work);
-	queue_work(pm_wq, &sh7372_a3rv.genpd.power_off_work);
-	queue_work(pm_wq, &sh7372_a3ri.genpd.power_off_work);
-	queue_work(pm_wq, &sh7372_a3sg.genpd.power_off_work);
-}
-
 void sh7372_init_pm_domain(struct sh7372_pm_domain *sh7372_pd)
 {
 	struct generic_pm_domain *genpd = &sh7372_pd->genpd;
@@ -157,8 +146,6 @@ void sh7372_init_pm_domain(struct sh7372_pm_domain *sh7372_pd)
 		genpd->power_on = pd_power_up;
 	}
 	genpd->power_on(&sh7372_pd->genpd);
-
-	shmobile_runtime_pm_late_init = sh7372_late_pm_domain_off;
 }
 
 void sh7372_add_device_to_domain(struct sh7372_pm_domain *sh7372_pd,

arch/arm/mach-shmobile/pm_runtime.c

@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/io.h>
 #include <linux/pm_runtime.h>
+#include <linux/pm_domain.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/sh_clk.h>
@@ -57,12 +58,9 @@ static int __init sh_pm_runtime_init(void)
 }
 core_initcall(sh_pm_runtime_init);
 
-void (*shmobile_runtime_pm_late_init)(void);
-
 static int __init sh_pm_runtime_late_init(void)
 {
-	if (shmobile_runtime_pm_late_init)
-		shmobile_runtime_pm_late_init();
+	pm_genpd_poweroff_unused();
 	return 0;
 }
 late_initcall(sh_pm_runtime_late_init);