2 * Generic OPP Interface
4 * Copyright (C) 2009-2010 Texas Instruments Incorporated.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #ifndef __LINUX_OPP_H__
15 #define __LINUX_OPP_H__
17 #include <linux/err.h>
18 #include <linux/notifier.h>
23 enum dev_pm_opp_event {
24 OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
27 #if defined(CONFIG_PM_OPP)
29 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
31 unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
33 int dev_pm_opp_get_opp_count(struct device *dev);
34 unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
36 struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
40 struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
43 struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
46 int dev_pm_opp_add(struct device *dev, unsigned long freq,
47 unsigned long u_volt);
48 void dev_pm_opp_remove(struct device *dev, unsigned long freq);
50 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
52 int dev_pm_opp_disable(struct device *dev, unsigned long freq);
54 struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
56 static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
61 static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
66 static inline int dev_pm_opp_get_opp_count(struct device *dev)
71 static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
76 static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
77 unsigned long freq, bool available)
79 return ERR_PTR(-EINVAL);
82 static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
85 return ERR_PTR(-EINVAL);
88 static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
91 return ERR_PTR(-EINVAL);
94 static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
100 static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
104 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
109 static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
114 static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
117 return ERR_PTR(-EINVAL);
119 #endif /* CONFIG_PM_OPP */
121 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
122 int of_init_opp_table(struct device *dev);
123 void of_free_opp_table(struct device *dev);
125 static inline int of_init_opp_table(struct device *dev)
130 static inline void of_free_opp_table(struct device *dev)
135 #endif /* __LINUX_OPP_H__ */