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/cpufreq.h>
19 #include <linux/notifier.h>
25 OPP_EVENT_ADD, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
28 #if defined(CONFIG_PM_OPP)
30 unsigned long opp_get_voltage(struct opp *opp);
32 unsigned long opp_get_freq(struct opp *opp);
34 int opp_get_opp_count(struct device *dev);
36 struct opp *opp_find_freq_exact(struct device *dev, unsigned long freq,
39 struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq);
41 struct opp *opp_find_freq_ceil(struct device *dev, unsigned long *freq);
43 int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt);
45 int opp_enable(struct device *dev, unsigned long freq);
47 int opp_disable(struct device *dev, unsigned long freq);
49 struct srcu_notifier_head *opp_get_notifier(struct device *dev);
52 int of_init_opp_table(struct device *dev);
54 static inline int of_init_opp_table(struct device *dev)
58 #endif /* CONFIG_OF */
60 static inline unsigned long opp_get_voltage(struct opp *opp)
65 static inline unsigned long opp_get_freq(struct opp *opp)
70 static inline int opp_get_opp_count(struct device *dev)
75 static inline struct opp *opp_find_freq_exact(struct device *dev,
76 unsigned long freq, bool available)
78 return ERR_PTR(-EINVAL);
81 static inline struct opp *opp_find_freq_floor(struct device *dev,
84 return ERR_PTR(-EINVAL);
87 static inline struct opp *opp_find_freq_ceil(struct device *dev,
90 return ERR_PTR(-EINVAL);
93 static inline int opp_add(struct device *dev, unsigned long freq,
99 static inline int opp_enable(struct device *dev, unsigned long freq)
104 static inline int opp_disable(struct device *dev, unsigned long freq)
109 static inline struct srcu_notifier_head *opp_get_notifier(struct device *dev)
111 return ERR_PTR(-EINVAL);
113 #endif /* CONFIG_PM_OPP */
115 #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)
116 int opp_init_cpufreq_table(struct device *dev,
117 struct cpufreq_frequency_table **table);
118 void opp_free_cpufreq_table(struct device *dev,
119 struct cpufreq_frequency_table **table);
121 static inline int opp_init_cpufreq_table(struct device *dev,
122 struct cpufreq_frequency_table **table)
128 void opp_free_cpufreq_table(struct device *dev,
129 struct cpufreq_frequency_table **table)
132 #endif /* CONFIG_CPU_FREQ */
134 #endif /* __LINUX_OPP_H__ */