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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> | |
03ca370f | 18 | #include <linux/notifier.h> |
e1f60b29 | 19 | |
47d43ba7 | 20 | struct dev_pm_opp; |
313162d0 | 21 | struct device; |
e1f60b29 | 22 | |
47d43ba7 | 23 | enum dev_pm_opp_event { |
129eec55 | 24 | OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE, |
03ca370f MH |
25 | }; |
26 | ||
e1f60b29 NM |
27 | #if defined(CONFIG_PM_OPP) |
28 | ||
47d43ba7 | 29 | unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp); |
e1f60b29 | 30 | |
47d43ba7 | 31 | unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp); |
e1f60b29 | 32 | |
19445b25 BZ |
33 | bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp); |
34 | ||
5d4879cd | 35 | int dev_pm_opp_get_opp_count(struct device *dev); |
3ca9bb33 | 36 | unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev); |
e1f60b29 | 37 | |
47d43ba7 NM |
38 | struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
39 | unsigned long freq, | |
40 | bool available); | |
e1f60b29 | 41 | |
47d43ba7 NM |
42 | struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
43 | unsigned long *freq); | |
e1f60b29 | 44 | |
47d43ba7 NM |
45 | struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
46 | unsigned long *freq); | |
e1f60b29 | 47 | |
5d4879cd NM |
48 | int dev_pm_opp_add(struct device *dev, unsigned long freq, |
49 | unsigned long u_volt); | |
129eec55 | 50 | void dev_pm_opp_remove(struct device *dev, unsigned long freq); |
e1f60b29 | 51 | |
5d4879cd | 52 | int dev_pm_opp_enable(struct device *dev, unsigned long freq); |
e1f60b29 | 53 | |
5d4879cd | 54 | int dev_pm_opp_disable(struct device *dev, unsigned long freq); |
e1f60b29 | 55 | |
5d4879cd | 56 | struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev); |
e1f60b29 | 57 | #else |
47d43ba7 | 58 | static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) |
e1f60b29 NM |
59 | { |
60 | return 0; | |
61 | } | |
62 | ||
47d43ba7 | 63 | static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) |
e1f60b29 NM |
64 | { |
65 | return 0; | |
66 | } | |
67 | ||
19445b25 BZ |
68 | static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) |
69 | { | |
70 | return false; | |
71 | } | |
72 | ||
5d4879cd | 73 | static inline int dev_pm_opp_get_opp_count(struct device *dev) |
e1f60b29 NM |
74 | { |
75 | return 0; | |
76 | } | |
77 | ||
3ca9bb33 VK |
78 | static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev) |
79 | { | |
80 | return 0; | |
81 | } | |
82 | ||
47d43ba7 | 83 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
e1f60b29 NM |
84 | unsigned long freq, bool available) |
85 | { | |
86 | return ERR_PTR(-EINVAL); | |
87 | } | |
88 | ||
47d43ba7 | 89 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
e1f60b29 NM |
90 | unsigned long *freq) |
91 | { | |
92 | return ERR_PTR(-EINVAL); | |
93 | } | |
94 | ||
47d43ba7 | 95 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
e1f60b29 NM |
96 | unsigned long *freq) |
97 | { | |
98 | return ERR_PTR(-EINVAL); | |
99 | } | |
100 | ||
5d4879cd | 101 | static inline int dev_pm_opp_add(struct device *dev, unsigned long freq, |
e1f60b29 NM |
102 | unsigned long u_volt) |
103 | { | |
104 | return -EINVAL; | |
105 | } | |
106 | ||
129eec55 VK |
107 | static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq) |
108 | { | |
109 | } | |
110 | ||
5d4879cd | 111 | static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
112 | { |
113 | return 0; | |
114 | } | |
115 | ||
5d4879cd | 116 | static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
117 | { |
118 | return 0; | |
119 | } | |
03ca370f | 120 | |
5d4879cd NM |
121 | static inline struct srcu_notifier_head *dev_pm_opp_get_notifier( |
122 | struct device *dev) | |
03ca370f MH |
123 | { |
124 | return ERR_PTR(-EINVAL); | |
125 | } | |
a96d69d1 | 126 | #endif /* CONFIG_PM_OPP */ |
e1f60b29 | 127 | |
d6561bb2 SG |
128 | #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) |
129 | int of_init_opp_table(struct device *dev); | |
129eec55 | 130 | void of_free_opp_table(struct device *dev); |
8d4d4e98 VK |
131 | int of_cpumask_init_opp_table(cpumask_var_t cpumask); |
132 | void of_cpumask_free_opp_table(cpumask_var_t cpumask); | |
133 | int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask); | |
134 | int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask); | |
d6561bb2 SG |
135 | #else |
136 | static inline int of_init_opp_table(struct device *dev) | |
137 | { | |
138 | return -EINVAL; | |
139 | } | |
129eec55 VK |
140 | |
141 | static inline void of_free_opp_table(struct device *dev) | |
142 | { | |
143 | } | |
8d4d4e98 VK |
144 | |
145 | static inline int of_cpumask_init_opp_table(cpumask_var_t cpumask) | |
146 | { | |
147 | return -ENOSYS; | |
148 | } | |
149 | ||
150 | static inline void of_cpumask_free_opp_table(cpumask_var_t cpumask) | |
151 | { | |
152 | } | |
153 | ||
154 | static inline int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask) | |
155 | { | |
156 | return -ENOSYS; | |
157 | } | |
158 | ||
159 | static inline int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask) | |
160 | { | |
161 | return -ENOSYS; | |
162 | } | |
d6561bb2 SG |
163 | #endif |
164 | ||
e1f60b29 | 165 | #endif /* __LINUX_OPP_H__ */ |