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>
24 enum dev_pm_opp_event {
25 OPP_EVENT_ADD, OPP_EVENT_REMOVE, 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 bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
36 int dev_pm_opp_get_opp_count(struct device *dev);
37 unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
38 unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev);
39 unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev);
40 struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev);
42 struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
46 struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
49 struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
52 int dev_pm_opp_add(struct device *dev, unsigned long freq,
53 unsigned long u_volt);
54 void dev_pm_opp_remove(struct device *dev, unsigned long freq);
56 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
58 int dev_pm_opp_disable(struct device *dev, unsigned long freq);
60 struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
61 int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
63 void dev_pm_opp_put_supported_hw(struct device *dev);
64 int dev_pm_opp_set_prop_name(struct device *dev, const char *name);
65 void dev_pm_opp_put_prop_name(struct device *dev);
66 struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name);
67 void dev_pm_opp_put_regulator(struct opp_table *opp_table);
68 int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
69 int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
70 int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
71 void dev_pm_opp_remove_table(struct device *dev);
72 void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
74 static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
79 static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
84 static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
89 static inline int dev_pm_opp_get_opp_count(struct device *dev)
94 static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
99 static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
104 static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
109 static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev)
114 static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
115 unsigned long freq, bool available)
117 return ERR_PTR(-ENOTSUPP);
120 static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
123 return ERR_PTR(-ENOTSUPP);
126 static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
129 return ERR_PTR(-ENOTSUPP);
132 static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
133 unsigned long u_volt)
138 static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
142 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
147 static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
152 static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
155 return ERR_PTR(-ENOTSUPP);
158 static inline int dev_pm_opp_set_supported_hw(struct device *dev,
165 static inline void dev_pm_opp_put_supported_hw(struct device *dev) {}
167 static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
172 static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
174 static inline struct opp_table *dev_pm_opp_set_regulator(struct device *dev, const char *name)
176 return ERR_PTR(-ENOTSUPP);
179 static inline void dev_pm_opp_put_regulator(struct opp_table *opp_table) {}
181 static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
186 static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
191 static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
196 static inline void dev_pm_opp_remove_table(struct device *dev)
200 static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
204 #endif /* CONFIG_PM_OPP */
206 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
207 int dev_pm_opp_of_add_table(struct device *dev);
208 void dev_pm_opp_of_remove_table(struct device *dev);
209 int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
210 void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
211 int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
213 static inline int dev_pm_opp_of_add_table(struct device *dev)
218 static inline void dev_pm_opp_of_remove_table(struct device *dev)
222 static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
227 static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
231 static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
237 #endif /* __LINUX_OPP_H__ */