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 enum dev_pm_opp_event {
25 OPP_EVENT_ADD, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
28 #if defined(CONFIG_PM_OPP)
30 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
32 unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
34 int dev_pm_opp_get_opp_count(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);
49 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
51 int dev_pm_opp_disable(struct device *dev, unsigned long freq);
53 struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
55 static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
60 static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
65 static inline int dev_pm_opp_get_opp_count(struct device *dev)
70 static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
71 unsigned long freq, bool available)
73 return ERR_PTR(-EINVAL);
76 static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
79 return ERR_PTR(-EINVAL);
82 static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
85 return ERR_PTR(-EINVAL);
88 static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
94 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
99 static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
104 static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
107 return ERR_PTR(-EINVAL);
109 #endif /* CONFIG_PM_OPP */
111 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
112 int of_init_opp_table(struct device *dev);
114 static inline int of_init_opp_table(struct device *dev)
120 #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)
121 int dev_pm_opp_init_cpufreq_table(struct device *dev,
122 struct cpufreq_frequency_table **table);
123 void dev_pm_opp_free_cpufreq_table(struct device *dev,
124 struct cpufreq_frequency_table **table);
126 static inline int dev_pm_opp_init_cpufreq_table(struct device *dev,
127 struct cpufreq_frequency_table **table)
133 void dev_pm_opp_free_cpufreq_table(struct device *dev,
134 struct cpufreq_frequency_table **table)
137 #endif /* CONFIG_CPU_FREQ */
139 #endif /* __LINUX_OPP_H__ */