]>
Commit | Line | Data |
---|---|---|
e1f60b29 NM |
1 | /* |
2 | * Generic OPP Interface | |
3 | * | |
4 | * Copyright (C) 2009-2010 Texas Instruments Incorporated. | |
5 | * Nishanth Menon | |
6 | * Romit Dasgupta | |
7 | * Kevin Hilman | |
8 | * | |
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. | |
12 | */ | |
13 | ||
14 | #ifndef __LINUX_OPP_H__ | |
15 | #define __LINUX_OPP_H__ | |
16 | ||
17 | #include <linux/err.h> | |
18 | #include <linux/cpufreq.h> | |
03ca370f | 19 | #include <linux/notifier.h> |
e1f60b29 NM |
20 | |
21 | struct opp; | |
313162d0 | 22 | struct device; |
e1f60b29 | 23 | |
03ca370f MH |
24 | enum opp_event { |
25 | OPP_EVENT_ADD, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE, | |
26 | }; | |
27 | ||
e1f60b29 NM |
28 | #if defined(CONFIG_PM_OPP) |
29 | ||
30 | unsigned long opp_get_voltage(struct opp *opp); | |
31 | ||
32 | unsigned long opp_get_freq(struct opp *opp); | |
33 | ||
34 | int opp_get_opp_count(struct device *dev); | |
35 | ||
36 | struct opp *opp_find_freq_exact(struct device *dev, unsigned long freq, | |
37 | bool available); | |
38 | ||
39 | struct opp *opp_find_freq_floor(struct device *dev, unsigned long *freq); | |
40 | ||
41 | struct opp *opp_find_freq_ceil(struct device *dev, unsigned long *freq); | |
42 | ||
43 | int opp_add(struct device *dev, unsigned long freq, unsigned long u_volt); | |
44 | ||
45 | int opp_enable(struct device *dev, unsigned long freq); | |
46 | ||
47 | int opp_disable(struct device *dev, unsigned long freq); | |
48 | ||
03ca370f MH |
49 | struct srcu_notifier_head *opp_get_notifier(struct device *dev); |
50 | ||
b496dfbc SG |
51 | #ifdef CONFIG_OF |
52 | int of_init_opp_table(struct device *dev); | |
53 | #else | |
54 | static inline int of_init_opp_table(struct device *dev) | |
55 | { | |
56 | return -EINVAL; | |
57 | } | |
58 | #endif /* CONFIG_OF */ | |
e1f60b29 NM |
59 | #else |
60 | static inline unsigned long opp_get_voltage(struct opp *opp) | |
61 | { | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static inline unsigned long opp_get_freq(struct opp *opp) | |
66 | { | |
67 | return 0; | |
68 | } | |
69 | ||
70 | static inline int opp_get_opp_count(struct device *dev) | |
71 | { | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static inline struct opp *opp_find_freq_exact(struct device *dev, | |
76 | unsigned long freq, bool available) | |
77 | { | |
78 | return ERR_PTR(-EINVAL); | |
79 | } | |
80 | ||
81 | static inline struct opp *opp_find_freq_floor(struct device *dev, | |
82 | unsigned long *freq) | |
83 | { | |
84 | return ERR_PTR(-EINVAL); | |
85 | } | |
86 | ||
87 | static inline struct opp *opp_find_freq_ceil(struct device *dev, | |
88 | unsigned long *freq) | |
89 | { | |
90 | return ERR_PTR(-EINVAL); | |
91 | } | |
92 | ||
93 | static inline int opp_add(struct device *dev, unsigned long freq, | |
94 | unsigned long u_volt) | |
95 | { | |
96 | return -EINVAL; | |
97 | } | |
98 | ||
99 | static inline int opp_enable(struct device *dev, unsigned long freq) | |
100 | { | |
101 | return 0; | |
102 | } | |
103 | ||
104 | static inline int opp_disable(struct device *dev, unsigned long freq) | |
105 | { | |
106 | return 0; | |
107 | } | |
03ca370f | 108 | |
a96d69d1 | 109 | static inline struct srcu_notifier_head *opp_get_notifier(struct device *dev) |
03ca370f MH |
110 | { |
111 | return ERR_PTR(-EINVAL); | |
112 | } | |
a96d69d1 | 113 | #endif /* CONFIG_PM_OPP */ |
e1f60b29 NM |
114 | |
115 | #if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP) | |
116 | int opp_init_cpufreq_table(struct device *dev, | |
117 | struct cpufreq_frequency_table **table); | |
99f381d3 NM |
118 | void opp_free_cpufreq_table(struct device *dev, |
119 | struct cpufreq_frequency_table **table); | |
e1f60b29 NM |
120 | #else |
121 | static inline int opp_init_cpufreq_table(struct device *dev, | |
122 | struct cpufreq_frequency_table **table) | |
123 | { | |
124 | return -EINVAL; | |
125 | } | |
99f381d3 NM |
126 | |
127 | static inline | |
128 | void opp_free_cpufreq_table(struct device *dev, | |
129 | struct cpufreq_frequency_table **table) | |
130 | { | |
131 | } | |
e1f60b29 NM |
132 | #endif /* CONFIG_CPU_FREQ */ |
133 | ||
134 | #endif /* __LINUX_OPP_H__ */ |