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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); |
4eafbd15 | 37 | struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev); |
e1f60b29 | 38 | |
47d43ba7 NM |
39 | struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
40 | unsigned long freq, | |
41 | bool available); | |
e1f60b29 | 42 | |
47d43ba7 NM |
43 | struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
44 | unsigned long *freq); | |
e1f60b29 | 45 | |
47d43ba7 NM |
46 | struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
47 | unsigned long *freq); | |
e1f60b29 | 48 | |
5d4879cd NM |
49 | int dev_pm_opp_add(struct device *dev, unsigned long freq, |
50 | unsigned long u_volt); | |
129eec55 | 51 | void dev_pm_opp_remove(struct device *dev, unsigned long freq); |
e1f60b29 | 52 | |
5d4879cd | 53 | int dev_pm_opp_enable(struct device *dev, unsigned long freq); |
e1f60b29 | 54 | |
5d4879cd | 55 | int dev_pm_opp_disable(struct device *dev, unsigned long freq); |
e1f60b29 | 56 | |
5d4879cd | 57 | struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev); |
7de36b0a VK |
58 | int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, |
59 | unsigned int count); | |
60 | void dev_pm_opp_put_supported_hw(struct device *dev); | |
01fb4d3c VK |
61 | int dev_pm_opp_set_prop_name(struct device *dev, const char *name); |
62 | void dev_pm_opp_put_prop_name(struct device *dev); | |
e1f60b29 | 63 | #else |
47d43ba7 | 64 | static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) |
e1f60b29 NM |
65 | { |
66 | return 0; | |
67 | } | |
68 | ||
47d43ba7 | 69 | static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) |
e1f60b29 NM |
70 | { |
71 | return 0; | |
72 | } | |
73 | ||
19445b25 BZ |
74 | static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) |
75 | { | |
76 | return false; | |
77 | } | |
78 | ||
5d4879cd | 79 | static inline int dev_pm_opp_get_opp_count(struct device *dev) |
e1f60b29 NM |
80 | { |
81 | return 0; | |
82 | } | |
83 | ||
3ca9bb33 VK |
84 | static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev) |
85 | { | |
86 | return 0; | |
87 | } | |
88 | ||
4eafbd15 BZ |
89 | static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev) |
90 | { | |
91 | return NULL; | |
92 | } | |
93 | ||
47d43ba7 | 94 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
e1f60b29 NM |
95 | unsigned long freq, bool available) |
96 | { | |
97 | return ERR_PTR(-EINVAL); | |
98 | } | |
99 | ||
47d43ba7 | 100 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
e1f60b29 NM |
101 | unsigned long *freq) |
102 | { | |
103 | return ERR_PTR(-EINVAL); | |
104 | } | |
105 | ||
47d43ba7 | 106 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
e1f60b29 NM |
107 | unsigned long *freq) |
108 | { | |
109 | return ERR_PTR(-EINVAL); | |
110 | } | |
111 | ||
5d4879cd | 112 | static inline int dev_pm_opp_add(struct device *dev, unsigned long freq, |
e1f60b29 NM |
113 | unsigned long u_volt) |
114 | { | |
115 | return -EINVAL; | |
116 | } | |
117 | ||
129eec55 VK |
118 | static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq) |
119 | { | |
120 | } | |
121 | ||
5d4879cd | 122 | static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
123 | { |
124 | return 0; | |
125 | } | |
126 | ||
5d4879cd | 127 | static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
128 | { |
129 | return 0; | |
130 | } | |
03ca370f | 131 | |
5d4879cd NM |
132 | static inline struct srcu_notifier_head *dev_pm_opp_get_notifier( |
133 | struct device *dev) | |
03ca370f MH |
134 | { |
135 | return ERR_PTR(-EINVAL); | |
136 | } | |
7de36b0a VK |
137 | |
138 | static inline int dev_pm_opp_set_supported_hw(struct device *dev, | |
139 | const u32 *versions, | |
140 | unsigned int count) | |
141 | { | |
142 | return -EINVAL; | |
143 | } | |
144 | ||
145 | static inline void dev_pm_opp_put_supported_hw(struct device *dev) {} | |
146 | ||
01fb4d3c VK |
147 | static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name) |
148 | { | |
149 | return -EINVAL; | |
150 | } | |
151 | ||
152 | static inline void dev_pm_opp_put_prop_name(struct device *dev) {} | |
153 | ||
a96d69d1 | 154 | #endif /* CONFIG_PM_OPP */ |
e1f60b29 | 155 | |
d6561bb2 | 156 | #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) |
8f8d37b2 VK |
157 | int dev_pm_opp_of_add_table(struct device *dev); |
158 | void dev_pm_opp_of_remove_table(struct device *dev); | |
159 | int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask); | |
160 | void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask); | |
161 | int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask); | |
162 | int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask); | |
d6561bb2 | 163 | #else |
8f8d37b2 | 164 | static inline int dev_pm_opp_of_add_table(struct device *dev) |
d6561bb2 SG |
165 | { |
166 | return -EINVAL; | |
167 | } | |
129eec55 | 168 | |
8f8d37b2 | 169 | static inline void dev_pm_opp_of_remove_table(struct device *dev) |
129eec55 VK |
170 | { |
171 | } | |
8d4d4e98 | 172 | |
8f8d37b2 | 173 | static inline int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask) |
8d4d4e98 VK |
174 | { |
175 | return -ENOSYS; | |
176 | } | |
177 | ||
8f8d37b2 | 178 | static inline void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask) |
8d4d4e98 VK |
179 | { |
180 | } | |
181 | ||
8f8d37b2 | 182 | static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask) |
8d4d4e98 VK |
183 | { |
184 | return -ENOSYS; | |
185 | } | |
186 | ||
8f8d37b2 | 187 | static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask) |
8d4d4e98 VK |
188 | { |
189 | return -ENOSYS; | |
190 | } | |
d6561bb2 SG |
191 | #endif |
192 | ||
e1f60b29 | 193 | #endif /* __LINUX_OPP_H__ */ |