1 files changed, 71 insertions, 0 deletions

diff --git a/include/linux/pm_clock.h b/include/linux/pm_clock.h
new file mode 100644
index 000000000000..8348866e7b05
--- /dev/null
+++ b/include/linux/pm_clock.h
@@ -0,0 +1,71 @@
+/*
+ * pm_clock.h - Definitions and headers related to device clocks.
+ *
+ * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
+ *
+ * This file is released under the GPLv2.
+ */
+
+#ifndef _LINUX_PM_CLOCK_H
+#define _LINUX_PM_CLOCK_H
+
+#include <linux/device.h>
+#include <linux/notifier.h>
+
+struct pm_clk_notifier_block {
+        struct notifier_block nb;
+        struct dev_pm_domain *pm_domain;
+        char *con_ids[];
+};
+
+#ifdef CONFIG_PM_CLK
+static inline bool pm_clk_no_clocks(struct device *dev)
+{
+        return dev && dev->power.subsys_data
+                && list_empty(&dev->power.subsys_data->clock_list);
+}
+
+extern void pm_clk_init(struct device *dev);
+extern int pm_clk_create(struct device *dev);
+extern void pm_clk_destroy(struct device *dev);
+extern int pm_clk_add(struct device *dev, const char *con_id);
+extern void pm_clk_remove(struct device *dev, const char *con_id);
+extern int pm_clk_suspend(struct device *dev);
+extern int pm_clk_resume(struct device *dev);
+#else
+static inline bool pm_clk_no_clocks(struct device *dev)
+{
+        return true;
+}
+static inline void pm_clk_init(struct device *dev)
+{
+}
+static inline int pm_clk_create(struct device *dev)
+{
+        return -EINVAL;
+}
+static inline void pm_clk_destroy(struct device *dev)
+{
+}
+static inline int pm_clk_add(struct device *dev, const char *con_id)
+{
+        return -EINVAL;
+}
+static inline void pm_clk_remove(struct device *dev, const char *con_id)
+{
+}
+#define pm_clk_suspend  NULL
+#define pm_clk_resume   NULL
+#endif
+
+#ifdef CONFIG_HAVE_CLK
+extern void pm_clk_add_notifier(struct bus_type *bus,
+                                        struct pm_clk_notifier_block *clknb);
+#else
+static inline void pm_clk_add_notifier(struct bus_type *bus,
+                                        struct pm_clk_notifier_block *clknb)
+{
+}
+#endif
+
+#endif