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__ */
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