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>
25 OPP_EVENT_ADD
, OPP_EVENT_ENABLE
, OPP_EVENT_DISABLE
,
28 #if defined(CONFIG_PM_OPP)
30 unsigned long opp_get_voltage(struct opp
*opp
);
32 unsigned long opp_get_freq(struct opp
*opp
);
34 int opp_get_opp_count(struct device
*dev
);
36 struct opp
*opp_find_freq_exact(struct device
*dev
, unsigned long freq
,
39 struct opp
*opp_find_freq_floor(struct device
*dev
, unsigned long *freq
);
41 struct opp
*opp_find_freq_ceil(struct device
*dev
, unsigned long *freq
);
43 int opp_add(struct device
*dev
, unsigned long freq
, unsigned long u_volt
);
45 int opp_enable(struct device
*dev
, unsigned long freq
);
47 int opp_disable(struct device
*dev
, unsigned long freq
);
49 struct srcu_notifier_head
*opp_get_notifier(struct device
*dev
);
52 static inline unsigned long opp_get_voltage(struct opp
*opp
)
57 static inline unsigned long opp_get_freq(struct opp
*opp
)
62 static inline int opp_get_opp_count(struct device
*dev
)
67 static inline struct opp
*opp_find_freq_exact(struct device
*dev
,
68 unsigned long freq
, bool available
)
70 return ERR_PTR(-EINVAL
);
73 static inline struct opp
*opp_find_freq_floor(struct device
*dev
,
76 return ERR_PTR(-EINVAL
);
79 static inline struct opp
*opp_find_freq_ceil(struct device
*dev
,
82 return ERR_PTR(-EINVAL
);
85 static inline int opp_add(struct device
*dev
, unsigned long freq
,
91 static inline int opp_enable(struct device
*dev
, unsigned long freq
)
96 static inline int opp_disable(struct device
*dev
, unsigned long freq
)
101 static inline struct srcu_notifier_head
*opp_get_notifier(struct device
*dev
)
103 return ERR_PTR(-EINVAL
);
105 #endif /* CONFIG_PM_OPP */
107 #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)
108 int opp_init_cpufreq_table(struct device
*dev
,
109 struct cpufreq_frequency_table
**table
);
110 void opp_free_cpufreq_table(struct device
*dev
,
111 struct cpufreq_frequency_table
**table
);
113 static inline int opp_init_cpufreq_table(struct device
*dev
,
114 struct cpufreq_frequency_table
**table
)
120 void opp_free_cpufreq_table(struct device
*dev
,
121 struct cpufreq_frequency_table
**table
)
124 #endif /* CONFIG_CPU_FREQ */
126 #endif /* __LINUX_OPP_H__ */
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