[PATCH 1/2] phy: core: Add phy_pm_runtime_enabled

[Tony Lindgren <tony@atomide.com>]

The phy driver may need to check phy_pm_runtime_enabled() in suspend as
PM runtime for phy may be already disabled when phy power_off() is called.

Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 drivers/phy/phy-core.c  | 9 +++++++++
 include/linux/phy/phy.h | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -209,6 +209,15 @@ int phy_pm_runtime_put_sync(struct phy *phy)
 }
 EXPORT_SYMBOL_GPL(phy_pm_runtime_put_sync);
 
+bool phy_pm_runtime_enabled(struct phy *phy)
+{
+	if (!phy)
+		return false;
+
+	return pm_runtime_enabled(&phy->dev);
+}
+EXPORT_SYMBOL_GPL(phy_pm_runtime_enabled);
+
 void phy_pm_runtime_allow(struct phy *phy)
 {
 	if (!phy)
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -158,6 +158,7 @@ int phy_pm_runtime_get(struct phy *phy);
 int phy_pm_runtime_get_sync(struct phy *phy);
 int phy_pm_runtime_put(struct phy *phy);
 int phy_pm_runtime_put_sync(struct phy *phy);
+bool phy_pm_runtime_enabled(struct phy *phy);
 void phy_pm_runtime_allow(struct phy *phy);
 void phy_pm_runtime_forbid(struct phy *phy);
 int phy_init(struct phy *phy);
@@ -240,6 +241,11 @@ static inline int phy_pm_runtime_put_sync(struct phy *phy)
 	return -ENOSYS;
 }
 
+static inline bool phy_pm_runtime_enabled(struct phy *phy)
+{
+	return false
+}
+
 static inline void phy_pm_runtime_allow(struct phy *phy)
 {
 	return;
-- 
2.19.1