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>
24 OPP_EVENT_ADD, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
27 #if defined(CONFIG_PM_OPP)
29 unsigned long opp_get_voltage(struct opp *opp);
31 unsigned long opp_get_freq(struct opp *opp);
33 int opp_get_opp_count(struct device *dev);
35 struct opp *opp_find_freq_exact(struct device *dev, unsigned long freq,
38 struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq);
40 struct opp *opp_find_freq_ceil(struct device *dev, unsigned long *freq);
42 int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt);
44 int opp_enable(struct device *dev, unsigned long freq);
46 int opp_disable(struct device *dev, unsigned long freq);
48 struct srcu_notifier_head *opp_get_notifier(struct device *dev);
51 int opp_enable_i(struct device *dev, int index);
52 int opp_disable_i(struct device *dev, int index);
53 int opp_hack_set_freq(struct device *dev, int index, unsigned long freq);
54 int opp_hack_get_freq(struct device *dev, int index, unsigned long *freq);
57 static inline unsigned long opp_get_voltage(struct opp *opp)
62 static inline unsigned long opp_get_freq(struct opp *opp)
67 static inline int opp_get_opp_count(struct device *dev)
72 static inline struct opp *opp_find_freq_exact(struct device *dev,
73 unsigned long freq, bool available)
75 return ERR_PTR(-EINVAL);
78 static inline struct opp *opp_find_freq_floor(struct device *dev,
81 return ERR_PTR(-EINVAL);
84 static inline struct opp *opp_find_freq_ceil(struct device *dev,
87 return ERR_PTR(-EINVAL);
90 static inline int opp_add(struct device *dev, unsigned long freq,
96 static inline int opp_enable(struct device *dev, unsigned long freq)
101 static inline int opp_disable(struct device *dev, unsigned long freq)
106 static inline struct srcu_notifier_head *opp_get_notifier(struct device *dev)
108 return ERR_PTR(-EINVAL);
110 #endif /* CONFIG_PM_OPP */
112 #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)
113 int opp_init_cpufreq_table(struct device *dev,
114 struct cpufreq_frequency_table **table);
115 void opp_free_cpufreq_table(struct device *dev,
116 struct cpufreq_frequency_table **table);
118 static inline int opp_init_cpufreq_table(struct device *dev,
119 struct cpufreq_frequency_table **table)
125 void opp_free_cpufreq_table(struct device *dev,
126 struct cpufreq_frequency_table **table)
129 #endif /* CONFIG_CPU_FREQ */
131 #endif /* __LINUX_OPP_H__ */