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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); |
655c9df9 | 37 | unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev); |
21743447 | 38 | unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev); |
4eafbd15 | 39 | struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev); |
e1f60b29 | 40 | |
47d43ba7 NM |
41 | struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
42 | unsigned long freq, | |
43 | bool available); | |
e1f60b29 | 44 | |
47d43ba7 NM |
45 | struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
46 | unsigned long *freq); | |
e1f60b29 | 47 | |
47d43ba7 NM |
48 | struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
49 | unsigned long *freq); | |
e1f60b29 | 50 | |
5d4879cd NM |
51 | int dev_pm_opp_add(struct device *dev, unsigned long freq, |
52 | unsigned long u_volt); | |
129eec55 | 53 | void dev_pm_opp_remove(struct device *dev, unsigned long freq); |
e1f60b29 | 54 | |
5d4879cd | 55 | int dev_pm_opp_enable(struct device *dev, unsigned long freq); |
e1f60b29 | 56 | |
5d4879cd | 57 | int dev_pm_opp_disable(struct device *dev, unsigned long freq); |
e1f60b29 | 58 | |
5d4879cd | 59 | struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev); |
7de36b0a VK |
60 | int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions, |
61 | unsigned int count); | |
62 | void dev_pm_opp_put_supported_hw(struct device *dev); | |
01fb4d3c VK |
63 | int dev_pm_opp_set_prop_name(struct device *dev, const char *name); |
64 | void dev_pm_opp_put_prop_name(struct device *dev); | |
9f8ea969 VK |
65 | int dev_pm_opp_set_regulator(struct device *dev, const char *name); |
66 | void dev_pm_opp_put_regulator(struct device *dev); | |
6a0712f6 | 67 | int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); |
dde370b2 | 68 | int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const cpumask_var_t cpumask); |
6f707daa | 69 | int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask); |
e1f60b29 | 70 | #else |
47d43ba7 | 71 | static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp) |
e1f60b29 NM |
72 | { |
73 | return 0; | |
74 | } | |
75 | ||
47d43ba7 | 76 | static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp) |
e1f60b29 NM |
77 | { |
78 | return 0; | |
79 | } | |
80 | ||
19445b25 BZ |
81 | static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp) |
82 | { | |
83 | return false; | |
84 | } | |
85 | ||
5d4879cd | 86 | static inline int dev_pm_opp_get_opp_count(struct device *dev) |
e1f60b29 NM |
87 | { |
88 | return 0; | |
89 | } | |
90 | ||
3ca9bb33 VK |
91 | static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev) |
92 | { | |
93 | return 0; | |
94 | } | |
95 | ||
655c9df9 VK |
96 | static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev) |
97 | { | |
98 | return 0; | |
99 | } | |
100 | ||
21743447 VK |
101 | static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev) |
102 | { | |
103 | return 0; | |
104 | } | |
105 | ||
4eafbd15 BZ |
106 | static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev) |
107 | { | |
108 | return NULL; | |
109 | } | |
110 | ||
47d43ba7 | 111 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, |
e1f60b29 NM |
112 | unsigned long freq, bool available) |
113 | { | |
d708b384 | 114 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
115 | } |
116 | ||
47d43ba7 | 117 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, |
e1f60b29 NM |
118 | unsigned long *freq) |
119 | { | |
d708b384 | 120 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
121 | } |
122 | ||
47d43ba7 | 123 | static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, |
e1f60b29 NM |
124 | unsigned long *freq) |
125 | { | |
d708b384 | 126 | return ERR_PTR(-ENOTSUPP); |
e1f60b29 NM |
127 | } |
128 | ||
5d4879cd | 129 | static inline int dev_pm_opp_add(struct device *dev, unsigned long freq, |
e1f60b29 NM |
130 | unsigned long u_volt) |
131 | { | |
d708b384 | 132 | return -ENOTSUPP; |
e1f60b29 NM |
133 | } |
134 | ||
129eec55 VK |
135 | static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq) |
136 | { | |
137 | } | |
138 | ||
5d4879cd | 139 | static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
140 | { |
141 | return 0; | |
142 | } | |
143 | ||
5d4879cd | 144 | static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq) |
e1f60b29 NM |
145 | { |
146 | return 0; | |
147 | } | |
03ca370f | 148 | |
5d4879cd NM |
149 | static inline struct srcu_notifier_head *dev_pm_opp_get_notifier( |
150 | struct device *dev) | |
03ca370f | 151 | { |
d708b384 | 152 | return ERR_PTR(-ENOTSUPP); |
03ca370f | 153 | } |
7de36b0a VK |
154 | |
155 | static inline int dev_pm_opp_set_supported_hw(struct device *dev, | |
156 | const u32 *versions, | |
157 | unsigned int count) | |
158 | { | |
d708b384 | 159 | return -ENOTSUPP; |
7de36b0a VK |
160 | } |
161 | ||
162 | static inline void dev_pm_opp_put_supported_hw(struct device *dev) {} | |
163 | ||
01fb4d3c VK |
164 | static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name) |
165 | { | |
d708b384 | 166 | return -ENOTSUPP; |
01fb4d3c VK |
167 | } |
168 | ||
169 | static inline void dev_pm_opp_put_prop_name(struct device *dev) {} | |
170 | ||
9f8ea969 VK |
171 | static inline int dev_pm_opp_set_regulator(struct device *dev, const char *name) |
172 | { | |
d708b384 | 173 | return -ENOTSUPP; |
9f8ea969 VK |
174 | } |
175 | ||
176 | static inline void dev_pm_opp_put_regulator(struct device *dev) {} | |
177 | ||
6a0712f6 VK |
178 | static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) |
179 | { | |
d708b384 | 180 | return -ENOTSUPP; |
6a0712f6 VK |
181 | } |
182 | ||
dde370b2 | 183 | static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const cpumask_var_t cpumask) |
642aa8ce | 184 | { |
d708b384 | 185 | return -ENOTSUPP; |
642aa8ce VK |
186 | } |
187 | ||
6f707daa VK |
188 | static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask) |
189 | { | |
190 | return -EINVAL; | |
191 | } | |
192 | ||
a96d69d1 | 193 | #endif /* CONFIG_PM_OPP */ |
e1f60b29 | 194 | |
d6561bb2 | 195 | #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF) |
8f8d37b2 VK |
196 | int dev_pm_opp_of_add_table(struct device *dev); |
197 | void dev_pm_opp_of_remove_table(struct device *dev); | |
198 | int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask); | |
199 | void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask); | |
200 | int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask); | |
d6561bb2 | 201 | #else |
8f8d37b2 | 202 | static inline int dev_pm_opp_of_add_table(struct device *dev) |
d6561bb2 | 203 | { |
d708b384 | 204 | return -ENOTSUPP; |
d6561bb2 | 205 | } |
129eec55 | 206 | |
8f8d37b2 | 207 | static inline void dev_pm_opp_of_remove_table(struct device *dev) |
129eec55 VK |
208 | { |
209 | } | |
8d4d4e98 | 210 | |
8f8d37b2 | 211 | static inline int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask) |
8d4d4e98 | 212 | { |
d708b384 | 213 | return -ENOTSUPP; |
8d4d4e98 VK |
214 | } |
215 | ||
8f8d37b2 | 216 | static inline void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask) |
8d4d4e98 VK |
217 | { |
218 | } | |
219 | ||
8f8d37b2 | 220 | static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask) |
8d4d4e98 | 221 | { |
d708b384 | 222 | return -ENOTSUPP; |
8d4d4e98 | 223 | } |
d6561bb2 SG |
224 | #endif |
225 | ||
e1f60b29 | 226 | #endif /* __LINUX_OPP_H__ */ |