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,
25 OPP_EVENT_ADJUST_VOLTAGE,
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_adjust_voltage(struct device *dev, unsigned long freq,
57 unsigned long u_volt);
59 int dev_pm_opp_enable(struct device *dev, unsigned long freq);
61 int dev_pm_opp_disable(struct device *dev, unsigned long freq);
63 struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
64 int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
66 void dev_pm_opp_put_supported_hw(struct device *dev);
67 int dev_pm_opp_set_prop_name(struct device *dev, const char *name);
68 void dev_pm_opp_put_prop_name(struct device *dev);
69 int dev_pm_opp_set_regulator(struct device *dev, const char *name);
70 void dev_pm_opp_put_regulator(struct device *dev);
71 int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
72 int dev_pm_opp_check_initial_rate(struct device *dev, unsigned long *cur_freq);
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(-EINVAL);
120 static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
123 return ERR_PTR(-EINVAL);
126 static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
129 return ERR_PTR(-EINVAL);
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)
143 dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
144 unsigned long u_volt)
149 static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
154 static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
159 static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
162 return ERR_PTR(-EINVAL);
165 static inline int dev_pm_opp_set_supported_hw(struct device *dev,
172 static inline void dev_pm_opp_put_supported_hw(struct device *dev) {}
174 static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
179 static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
181 static inline int dev_pm_opp_set_regulator(struct device *dev, const char *name)
186 static inline void dev_pm_opp_put_regulator(struct device *dev) {}
188 static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
193 static inline int dev_pm_opp_check_initial_rate(struct device *dev,
194 unsigned long *cur_freq)
199 #endif /* CONFIG_PM_OPP */
201 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
202 int dev_pm_opp_of_add_table(struct device *dev);
203 void dev_pm_opp_of_remove_table(struct device *dev);
204 int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask);
205 void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask);
206 int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
207 int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
209 static inline int dev_pm_opp_of_add_table(struct device *dev)
214 static inline void dev_pm_opp_of_remove_table(struct device *dev)
218 static inline int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask)
223 static inline void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
227 static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
232 static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
238 #endif /* __LINUX_OPP_H__ */