Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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/notifier.h>
19
20struct dev_pm_opp;
21struct device;
22
23enum dev_pm_opp_event {
24 OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
25};
26
27#if defined(CONFIG_PM_OPP)
28
29unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
30
31unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
32
33bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
34
35int dev_pm_opp_get_opp_count(struct device *dev);
36unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
37struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev);
38
39struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
40 unsigned long freq,
41 bool available);
42
43struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
44 unsigned long *freq);
45
46struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
47 unsigned long *freq);
48
49int dev_pm_opp_add(struct device *dev, unsigned long freq,
50 unsigned long u_volt);
51void dev_pm_opp_remove(struct device *dev, unsigned long freq);
52
53int dev_pm_opp_enable(struct device *dev, unsigned long freq);
54
55int dev_pm_opp_disable(struct device *dev, unsigned long freq);
56
57struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
58int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
59 unsigned int count);
60void dev_pm_opp_put_supported_hw(struct device *dev);
61int dev_pm_opp_set_prop_name(struct device *dev, const char *name);
62void dev_pm_opp_put_prop_name(struct device *dev);
63#else
64static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
65{
66 return 0;
67}
68
69static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
70{
71 return 0;
72}
73
74static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
75{
76 return false;
77}
78
79static inline int dev_pm_opp_get_opp_count(struct device *dev)
80{
81 return 0;
82}
83
84static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
85{
86 return 0;
87}
88
89static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev)
90{
91 return NULL;
92}
93
94static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
95 unsigned long freq, bool available)
96{
97 return ERR_PTR(-EINVAL);
98}
99
100static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
101 unsigned long *freq)
102{
103 return ERR_PTR(-EINVAL);
104}
105
106static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
107 unsigned long *freq)
108{
109 return ERR_PTR(-EINVAL);
110}
111
112static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
113 unsigned long u_volt)
114{
115 return -EINVAL;
116}
117
118static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
119{
120}
121
122static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
123{
124 return 0;
125}
126
127static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
128{
129 return 0;
130}
131
132static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
133 struct device *dev)
134{
135 return ERR_PTR(-EINVAL);
136}
137
138static 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
145static inline void dev_pm_opp_put_supported_hw(struct device *dev) {}
146
147static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
148{
149 return -EINVAL;
150}
151
152static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
153
154#endif /* CONFIG_PM_OPP */
155
156#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
157int dev_pm_opp_of_add_table(struct device *dev);
158void dev_pm_opp_of_remove_table(struct device *dev);
159int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask);
160void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask);
161int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
162int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
163#else
164static inline int dev_pm_opp_of_add_table(struct device *dev)
165{
166 return -EINVAL;
167}
168
169static inline void dev_pm_opp_of_remove_table(struct device *dev)
170{
171}
172
173static inline int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask)
174{
175 return -ENOSYS;
176}
177
178static inline void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
179{
180}
181
182static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
183{
184 return -ENOSYS;
185}
186
187static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
188{
189 return -ENOSYS;
190}
191#endif
192
193#endif /* __LINUX_OPP_H__ */