d961101d1cea15c5d544139d56b8fba9add4cf8f
[linux-2.6.git] / tools / power / cpupower / lib / cpufreq.c
1 /*
2  *  (C) 2004-2009  Dominik Brodowski <linux@dominikbrodowski.de>
3  *
4  *  Licensed under the terms of the GNU GPL License version 2.
5  */
6
7
8 #include <stdio.h>
9 #include <errno.h>
10 #include <stdlib.h>
11 #include <string.h>
12
13 #include "cpufreq.h"
14 #include "sysfs.h"
15
16 int cpufreq_cpu_exists(unsigned int cpu)
17 {
18         return sysfs_cpu_exists(cpu);
19 }
20
21 unsigned long cpufreq_get_freq_kernel(unsigned int cpu)
22 {
23         return sysfs_get_freq_kernel(cpu);
24 }
25
26 unsigned long cpufreq_get_freq_hardware(unsigned int cpu)
27 {
28         return sysfs_get_freq_hardware(cpu);
29 }
30
31 unsigned long cpufreq_get_transition_latency(unsigned int cpu)
32 {
33         return sysfs_get_freq_transition_latency(cpu);
34 }
35
36 int cpufreq_get_hardware_limits(unsigned int cpu,
37                                 unsigned long *min,
38                                 unsigned long *max)
39 {
40         if ((!min) || (!max))
41                 return -EINVAL;
42         return sysfs_get_freq_hardware_limits(cpu, min, max);
43 }
44
45 char *cpufreq_get_driver(unsigned int cpu)
46 {
47         return sysfs_get_freq_driver(cpu);
48 }
49
50 void cpufreq_put_driver(char *ptr)
51 {
52         if (!ptr)
53                 return;
54         free(ptr);
55 }
56
57 struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu)
58 {
59         return sysfs_get_freq_policy(cpu);
60 }
61
62 void cpufreq_put_policy(struct cpufreq_policy *policy)
63 {
64         if ((!policy) || (!policy->governor))
65                 return;
66
67         free(policy->governor);
68         policy->governor = NULL;
69         free(policy);
70 }
71
72 struct cpufreq_available_governors *cpufreq_get_available_governors(unsigned
73                                                                 int cpu)
74 {
75         return sysfs_get_freq_available_governors(cpu);
76 }
77
78 void cpufreq_put_available_governors(struct cpufreq_available_governors *any)
79 {
80         struct cpufreq_available_governors *tmp, *next;
81
82         if (!any)
83                 return;
84
85         tmp = any->first;
86         while (tmp) {
87                 next = tmp->next;
88                 if (tmp->governor)
89                         free(tmp->governor);
90                 free(tmp);
91                 tmp = next;
92         }
93 }
94
95
96 struct cpufreq_available_frequencies
97 *cpufreq_get_available_frequencies(unsigned int cpu)
98 {
99         return sysfs_get_available_frequencies(cpu);
100 }
101
102 void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies
103                                 *any) {
104         struct cpufreq_available_frequencies *tmp, *next;
105
106         if (!any)
107                 return;
108
109         tmp = any->first;
110         while (tmp) {
111                 next = tmp->next;
112                 free(tmp);
113                 tmp = next;
114         }
115 }
116
117
118 struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned int cpu)
119 {
120         return sysfs_get_freq_affected_cpus(cpu);
121 }
122
123 void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any)
124 {
125         struct cpufreq_affected_cpus *tmp, *next;
126
127         if (!any)
128                 return;
129
130         tmp = any->first;
131         while (tmp) {
132                 next = tmp->next;
133                 free(tmp);
134                 tmp = next;
135         }
136 }
137
138
139 struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned int cpu)
140 {
141         return sysfs_get_freq_related_cpus(cpu);
142 }
143
144 void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *any)
145 {
146         cpufreq_put_affected_cpus(any);
147 }
148
149
150 int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy)
151 {
152         if (!policy || !(policy->governor))
153                 return -EINVAL;
154
155         return sysfs_set_freq_policy(cpu, policy);
156 }
157
158
159 int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq)
160 {
161         return sysfs_modify_freq_policy_min(cpu, min_freq);
162 }
163
164
165 int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq)
166 {
167         return sysfs_modify_freq_policy_max(cpu, max_freq);
168 }
169
170
171 int cpufreq_modify_policy_governor(unsigned int cpu, char *governor)
172 {
173         if ((!governor) || (strlen(governor) > 19))
174                 return -EINVAL;
175
176         return sysfs_modify_freq_policy_governor(cpu, governor);
177 }
178
179 int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency)
180 {
181         return sysfs_set_frequency(cpu, target_frequency);
182 }
183
184 struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu,
185                                         unsigned long long *total_time)
186 {
187         return sysfs_get_freq_stats(cpu, total_time);
188 }
189
190 void cpufreq_put_stats(struct cpufreq_stats *any)
191 {
192         struct cpufreq_stats *tmp, *next;
193
194         if (!any)
195                 return;
196
197         tmp = any->first;
198         while (tmp) {
199                 next = tmp->next;
200                 free(tmp);
201                 tmp = next;
202         }
203 }
204
205 unsigned long cpufreq_get_transitions(unsigned int cpu)
206 {
207         return sysfs_get_freq_transitions(cpu);
208 }