Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / pm_opp.h

diff --git a/kernel/include/linux/pm_opp.h b/kernel/include/linux/pm_opp.h
new file mode 100644 (file)
index 0000000..cec2d45
--- /dev/null
+++ b/kernel/include/linux/pm_opp.h
@@ -0,0 +1,129 @@
+/*
+ * Generic OPP Interface
+ *
+ * Copyright (C) 2009-2010 Texas Instruments Incorporated.
+ *     Nishanth Menon
+ *     Romit Dasgupta
+ *     Kevin Hilman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_OPP_H__
+#define __LINUX_OPP_H__
+
+#include <linux/err.h>
+#include <linux/notifier.h>
+
+struct dev_pm_opp;
+struct device;
+
+enum dev_pm_opp_event {
+       OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
+};
+
+#if defined(CONFIG_PM_OPP)
+
+unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
+
+unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
+
+int dev_pm_opp_get_opp_count(struct device *dev);
+
+struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
+                                             unsigned long freq,
+                                             bool available);
+
+struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
+                                             unsigned long *freq);
+
+struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
+                                            unsigned long *freq);
+
+int dev_pm_opp_add(struct device *dev, unsigned long freq,
+                  unsigned long u_volt);
+void dev_pm_opp_remove(struct device *dev, unsigned long freq);
+
+int dev_pm_opp_enable(struct device *dev, unsigned long freq);
+
+int dev_pm_opp_disable(struct device *dev, unsigned long freq);
+
+struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
+#else
+static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
+{
+       return 0;
+}
+
+static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
+{
+       return 0;
+}
+
+static inline int dev_pm_opp_get_opp_count(struct device *dev)
+{
+       return 0;
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
+                                       unsigned long freq, bool available)
+{
+       return ERR_PTR(-EINVAL);
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
+                                       unsigned long *freq)
+{
+       return ERR_PTR(-EINVAL);
+}
+
+static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
+                                       unsigned long *freq)
+{
+       return ERR_PTR(-EINVAL);
+}
+
+static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
+                                       unsigned long u_volt)
+{
+       return -EINVAL;
+}
+
+static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
+{
+}
+
+static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
+{
+       return 0;
+}
+
+static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
+{
+       return 0;
+}
+
+static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
+                                                       struct device *dev)
+{
+       return ERR_PTR(-EINVAL);
+}
+#endif         /* CONFIG_PM_OPP */
+
+#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
+int of_init_opp_table(struct device *dev);
+void of_free_opp_table(struct device *dev);
+#else
+static inline int of_init_opp_table(struct device *dev)
+{
+       return -EINVAL;
+}
+
+static inline void of_free_opp_table(struct device *dev)
+{
+}
+#endif
+
+#endif         /* __LINUX_OPP_H__ */