Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / tools / power / cpupower / lib / cpufreq.c
blobd961101d1cea15c5d544139d56b8fba9add4cf8f
1 /*
2 * (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de>
4 * Licensed under the terms of the GNU GPL License version 2.
5 */
8 #include <stdio.h>
9 #include <errno.h>
10 #include <stdlib.h>
11 #include <string.h>
13 #include "cpufreq.h"
14 #include "sysfs.h"
16 int cpufreq_cpu_exists(unsigned int cpu)
18 return sysfs_cpu_exists(cpu);
21 unsigned long cpufreq_get_freq_kernel(unsigned int cpu)
23 return sysfs_get_freq_kernel(cpu);
26 unsigned long cpufreq_get_freq_hardware(unsigned int cpu)
28 return sysfs_get_freq_hardware(cpu);
31 unsigned long cpufreq_get_transition_latency(unsigned int cpu)
33 return sysfs_get_freq_transition_latency(cpu);
36 int cpufreq_get_hardware_limits(unsigned int cpu,
37 unsigned long *min,
38 unsigned long *max)
40 if ((!min) || (!max))
41 return -EINVAL;
42 return sysfs_get_freq_hardware_limits(cpu, min, max);
45 char *cpufreq_get_driver(unsigned int cpu)
47 return sysfs_get_freq_driver(cpu);
50 void cpufreq_put_driver(char *ptr)
52 if (!ptr)
53 return;
54 free(ptr);
57 struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu)
59 return sysfs_get_freq_policy(cpu);
62 void cpufreq_put_policy(struct cpufreq_policy *policy)
64 if ((!policy) || (!policy->governor))
65 return;
67 free(policy->governor);
68 policy->governor = NULL;
69 free(policy);
72 struct cpufreq_available_governors *cpufreq_get_available_governors(unsigned
73 int cpu)
75 return sysfs_get_freq_available_governors(cpu);
78 void cpufreq_put_available_governors(struct cpufreq_available_governors *any)
80 struct cpufreq_available_governors *tmp, *next;
82 if (!any)
83 return;
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;
96 struct cpufreq_available_frequencies
97 *cpufreq_get_available_frequencies(unsigned int cpu)
99 return sysfs_get_available_frequencies(cpu);
102 void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies
103 *any) {
104 struct cpufreq_available_frequencies *tmp, *next;
106 if (!any)
107 return;
109 tmp = any->first;
110 while (tmp) {
111 next = tmp->next;
112 free(tmp);
113 tmp = next;
118 struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned int cpu)
120 return sysfs_get_freq_affected_cpus(cpu);
123 void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any)
125 struct cpufreq_affected_cpus *tmp, *next;
127 if (!any)
128 return;
130 tmp = any->first;
131 while (tmp) {
132 next = tmp->next;
133 free(tmp);
134 tmp = next;
139 struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned int cpu)
141 return sysfs_get_freq_related_cpus(cpu);
144 void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *any)
146 cpufreq_put_affected_cpus(any);
150 int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy)
152 if (!policy || !(policy->governor))
153 return -EINVAL;
155 return sysfs_set_freq_policy(cpu, policy);
159 int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq)
161 return sysfs_modify_freq_policy_min(cpu, min_freq);
165 int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq)
167 return sysfs_modify_freq_policy_max(cpu, max_freq);
171 int cpufreq_modify_policy_governor(unsigned int cpu, char *governor)
173 if ((!governor) || (strlen(governor) > 19))
174 return -EINVAL;
176 return sysfs_modify_freq_policy_governor(cpu, governor);
179 int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency)
181 return sysfs_set_frequency(cpu, target_frequency);
184 struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu,
185 unsigned long long *total_time)
187 return sysfs_get_freq_stats(cpu, total_time);
190 void cpufreq_put_stats(struct cpufreq_stats *any)
192 struct cpufreq_stats *tmp, *next;
194 if (!any)
195 return;
197 tmp = any->first;
198 while (tmp) {
199 next = tmp->next;
200 free(tmp);
201 tmp = next;
205 unsigned long cpufreq_get_transitions(unsigned int cpu)
207 return sysfs_get_freq_transitions(cpu);