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-rw-r--r--drivers/base/power/domain.c51
1 files changed, 35 insertions, 16 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 92b750b865d5..52d292617401 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1363,41 +1363,60 @@ static void genpd_complete(struct device *dev)
genpd_unlock(genpd);
}
-/**
- * genpd_syscore_switch - Switch power during system core suspend or resume.
- * @dev: Device that normally is marked as "always on" to switch power for.
- *
- * This routine may only be called during the system core (syscore) suspend or
- * resume phase for devices whose "always on" flags are set.
- */
-static void genpd_syscore_switch(struct device *dev, bool suspend)
+static void genpd_switch_state(struct device *dev, bool suspend)
{
struct generic_pm_domain *genpd;
+ bool use_lock;
genpd = dev_to_genpd_safe(dev);
if (!genpd)
return;
+ use_lock = genpd_is_irq_safe(genpd);
+
+ if (use_lock)
+ genpd_lock(genpd);
+
if (suspend) {
genpd->suspended_count++;
- genpd_sync_power_off(genpd, false, 0);
+ genpd_sync_power_off(genpd, use_lock, 0);
} else {
- genpd_sync_power_on(genpd, false, 0);
+ genpd_sync_power_on(genpd, use_lock, 0);
genpd->suspended_count--;
}
+
+ if (use_lock)
+ genpd_unlock(genpd);
}
-void pm_genpd_syscore_poweroff(struct device *dev)
+/**
+ * dev_pm_genpd_suspend - Synchronously try to suspend the genpd for @dev
+ * @dev: The device that is attached to the genpd, that can be suspended.
+ *
+ * This routine should typically be called for a device that needs to be
+ * suspended during the syscore suspend phase. It may also be called during
+ * suspend-to-idle to suspend a corresponding CPU device that is attached to a
+ * genpd.
+ */
+void dev_pm_genpd_suspend(struct device *dev)
{
- genpd_syscore_switch(dev, true);
+ genpd_switch_state(dev, true);
}
-EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweroff);
+EXPORT_SYMBOL_GPL(dev_pm_genpd_suspend);
-void pm_genpd_syscore_poweron(struct device *dev)
+/**
+ * dev_pm_genpd_resume - Synchronously try to resume the genpd for @dev
+ * @dev: The device that is attached to the genpd, which needs to be resumed.
+ *
+ * This routine should typically be called for a device that needs to be resumed
+ * during the syscore resume phase. It may also be called during suspend-to-idle
+ * to resume a corresponding CPU device that is attached to a genpd.
+ */
+void dev_pm_genpd_resume(struct device *dev)
{
- genpd_syscore_switch(dev, false);
+ genpd_switch_state(dev, false);
}
-EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweron);
+EXPORT_SYMBOL_GPL(dev_pm_genpd_resume);
#else /* !CONFIG_PM_SLEEP */