1 files changed, 59 insertions, 1 deletions
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index c562481..2fb9c12 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -15,7 +15,7 @@
 #include <linux/slab.h>
 #include <linux/err.h>
 
-#ifdef CONFIG_PM_RUNTIME
+#ifdef CONFIG_PM
 
 struct pm_runtime_clk_data {
 	struct list_head clock_list;
@@ -191,6 +191,10 @@ void pm_runtime_clk_destroy(struct device *dev)
 	kfree(prd);
 }
 
+#endif /* CONFIG_PM */
+
+#ifdef CONFIG_PM_RUNTIME
+
 /**
  * pm_runtime_clk_acquire - Acquire a device clock.
  * @dev: Device whose clock is to be acquired.
@@ -330,6 +334,60 @@ static int pm_runtime_clk_notify(struct notifier_block *nb,
 
 #else /* !CONFIG_PM_RUNTIME */
 
+#ifdef CONFIG_PM
+
+/**
+ * pm_runtime_clk_suspend - Disable clocks in a device's PM clock list.
+ * @dev: Device to disable the clocks for.
+ */
+int pm_runtime_clk_suspend(struct device *dev)
+{
+	struct pm_runtime_clk_data *prd = __to_prd(dev);
+	struct pm_clock_entry *ce;
+
+	dev_dbg(dev, "%s()\n", __func__);
+
+	/* If there is no driver, the clocks are already disabled. */
+	if (!prd || !dev->driver)
+		return 0;
+
+	mutex_lock(&prd->lock);
+
+	list_for_each_entry_reverse(ce, &prd->clock_list, node)
+		clk_disable(ce->clk);
+
+	mutex_unlock(&prd->lock);
+
+	return 0;
+}
+
+/**
+ * pm_runtime_clk_resume - Enable clocks in a device's PM clock list.
+ * @dev: Device to enable the clocks for.
+ */
+int pm_runtime_clk_resume(struct device *dev)
+{
+	struct pm_runtime_clk_data *prd = __to_prd(dev);
+	struct pm_clock_entry *ce;
+
+	dev_dbg(dev, "%s()\n", __func__);
+
+	/* If there is no driver, the clocks should remain disabled. */
+	if (!prd || !dev->driver)
+		return 0;
+
+	mutex_lock(&prd->lock);
+
+	list_for_each_entry(ce, &prd->clock_list, node)
+		clk_enable(ce->clk);
+
+	mutex_unlock(&prd->lock);
+
+	return 0;
+}
+
+#endif /* CONFIG_PM */
+
 /**
  * enable_clock - Enable a device clock.
  * @dev: Device whose clock is to be enabled.