diff options
-rw-r--r-- | include/linux/cpufreq.h | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 2845f6e67221..11be48e0d168 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h | |||
@@ -3,7 +3,7 @@ | |||
3 | * | 3 | * |
4 | * Copyright (C) 2001 Russell King | 4 | * Copyright (C) 2001 Russell King |
5 | * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> | 5 | * (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> |
6 | * | 6 | * |
7 | * This program is free software; you can redistribute it and/or modify | 7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License version 2 as | 8 | * it under the terms of the GNU General Public License version 2 as |
9 | * published by the Free Software Foundation. | 9 | * published by the Free Software Foundation. |
@@ -56,9 +56,9 @@ static inline int cpufreq_unregister_notifier(struct notifier_block *nb, | |||
56 | #define CPUFREQ_POLICY_POWERSAVE (1) | 56 | #define CPUFREQ_POLICY_POWERSAVE (1) |
57 | #define CPUFREQ_POLICY_PERFORMANCE (2) | 57 | #define CPUFREQ_POLICY_PERFORMANCE (2) |
58 | 58 | ||
59 | /* Frequency values here are CPU kHz so that hardware which doesn't run | 59 | /* Frequency values here are CPU kHz so that hardware which doesn't run |
60 | * with some frequencies can complain without having to guess what per | 60 | * with some frequencies can complain without having to guess what per |
61 | * cent / per mille means. | 61 | * cent / per mille means. |
62 | * Maximum transition latency is in nanoseconds - if it's unknown, | 62 | * Maximum transition latency is in nanoseconds - if it's unknown, |
63 | * CPUFREQ_ETERNAL shall be used. | 63 | * CPUFREQ_ETERNAL shall be used. |
64 | */ | 64 | */ |
@@ -72,13 +72,15 @@ extern struct kobject *cpufreq_global_kobject; | |||
72 | struct cpufreq_cpuinfo { | 72 | struct cpufreq_cpuinfo { |
73 | unsigned int max_freq; | 73 | unsigned int max_freq; |
74 | unsigned int min_freq; | 74 | unsigned int min_freq; |
75 | unsigned int transition_latency; /* in 10^(-9) s = nanoseconds */ | 75 | |
76 | /* in 10^(-9) s = nanoseconds */ | ||
77 | unsigned int transition_latency; | ||
76 | }; | 78 | }; |
77 | 79 | ||
78 | struct cpufreq_real_policy { | 80 | struct cpufreq_real_policy { |
79 | unsigned int min; /* in kHz */ | 81 | unsigned int min; /* in kHz */ |
80 | unsigned int max; /* in kHz */ | 82 | unsigned int max; /* in kHz */ |
81 | unsigned int policy; /* see above */ | 83 | unsigned int policy; /* see above */ |
82 | struct cpufreq_governor *governor; /* see below */ | 84 | struct cpufreq_governor *governor; /* see below */ |
83 | }; | 85 | }; |
84 | 86 | ||
@@ -94,7 +96,7 @@ struct cpufreq_policy { | |||
94 | unsigned int max; /* in kHz */ | 96 | unsigned int max; /* in kHz */ |
95 | unsigned int cur; /* in kHz, only needed if cpufreq | 97 | unsigned int cur; /* in kHz, only needed if cpufreq |
96 | * governors are used */ | 98 | * governors are used */ |
97 | unsigned int policy; /* see above */ | 99 | unsigned int policy; /* see above */ |
98 | struct cpufreq_governor *governor; /* see below */ | 100 | struct cpufreq_governor *governor; /* see below */ |
99 | 101 | ||
100 | struct work_struct update; /* if update_policy() needs to be | 102 | struct work_struct update; /* if update_policy() needs to be |
@@ -167,11 +169,11 @@ static inline unsigned long cpufreq_scale(unsigned long old, u_int div, u_int mu | |||
167 | 169 | ||
168 | struct cpufreq_governor { | 170 | struct cpufreq_governor { |
169 | char name[CPUFREQ_NAME_LEN]; | 171 | char name[CPUFREQ_NAME_LEN]; |
170 | int (*governor) (struct cpufreq_policy *policy, | 172 | int (*governor) (struct cpufreq_policy *policy, |
171 | unsigned int event); | 173 | unsigned int event); |
172 | ssize_t (*show_setspeed) (struct cpufreq_policy *policy, | 174 | ssize_t (*show_setspeed) (struct cpufreq_policy *policy, |
173 | char *buf); | 175 | char *buf); |
174 | int (*store_setspeed) (struct cpufreq_policy *policy, | 176 | int (*store_setspeed) (struct cpufreq_policy *policy, |
175 | unsigned int freq); | 177 | unsigned int freq); |
176 | unsigned int max_transition_latency; /* HW must be able to switch to | 178 | unsigned int max_transition_latency; /* HW must be able to switch to |
177 | next freq faster than this value in nano secs or we | 179 | next freq faster than this value in nano secs or we |
@@ -180,7 +182,8 @@ struct cpufreq_governor { | |||
180 | struct module *owner; | 182 | struct module *owner; |
181 | }; | 183 | }; |
182 | 184 | ||
183 | /* pass a target to the cpufreq driver | 185 | /* |
186 | * Pass a target to the cpufreq driver. | ||
184 | */ | 187 | */ |
185 | extern int cpufreq_driver_target(struct cpufreq_policy *policy, | 188 | extern int cpufreq_driver_target(struct cpufreq_policy *policy, |
186 | unsigned int target_freq, | 189 | unsigned int target_freq, |
@@ -237,9 +240,9 @@ struct cpufreq_driver { | |||
237 | 240 | ||
238 | /* flags */ | 241 | /* flags */ |
239 | 242 | ||
240 | #define CPUFREQ_STICKY 0x01 /* the driver isn't removed even if | 243 | #define CPUFREQ_STICKY 0x01 /* the driver isn't removed even if |
241 | * all ->init() calls failed */ | 244 | * all ->init() calls failed */ |
242 | #define CPUFREQ_CONST_LOOPS 0x02 /* loops_per_jiffy or other kernel | 245 | #define CPUFREQ_CONST_LOOPS 0x02 /* loops_per_jiffy or other kernel |
243 | * "constants" aren't affected by | 246 | * "constants" aren't affected by |
244 | * frequency transitions */ | 247 | * frequency transitions */ |
245 | #define CPUFREQ_PM_NO_WARN 0x04 /* don't warn on suspend/resume speed | 248 | #define CPUFREQ_PM_NO_WARN 0x04 /* don't warn on suspend/resume speed |
@@ -252,7 +255,7 @@ int cpufreq_unregister_driver(struct cpufreq_driver *driver_data); | |||
252 | void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state); | 255 | void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state); |
253 | 256 | ||
254 | 257 | ||
255 | static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max) | 258 | static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max) |
256 | { | 259 | { |
257 | if (policy->min < min) | 260 | if (policy->min < min) |
258 | policy->min = min; | 261 | policy->min = min; |
@@ -386,12 +389,12 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy, | |||
386 | /* the following 3 funtions are for cpufreq core use only */ | 389 | /* the following 3 funtions are for cpufreq core use only */ |
387 | struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu); | 390 | struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu); |
388 | struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); | 391 | struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu); |
389 | void cpufreq_cpu_put (struct cpufreq_policy *data); | 392 | void cpufreq_cpu_put(struct cpufreq_policy *data); |
390 | 393 | ||
391 | /* the following are really really optional */ | 394 | /* the following are really really optional */ |
392 | extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; | 395 | extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs; |
393 | 396 | ||
394 | void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, | 397 | void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table, |
395 | unsigned int cpu); | 398 | unsigned int cpu); |
396 | 399 | ||
397 | void cpufreq_frequency_table_put_attr(unsigned int cpu); | 400 | void cpufreq_frequency_table_put_attr(unsigned int cpu); |