1
2
3
4
5
6
7
8
9
10
11#ifndef _LINUX_CPUFREQ_H
12#define _LINUX_CPUFREQ_H
13
14#include <linux/clk.h>
15#include <linux/cpumask.h>
16#include <linux/completion.h>
17#include <linux/kobject.h>
18#include <linux/notifier.h>
19#include <linux/spinlock.h>
20#include <linux/sysfs.h>
21
22
23
24
25
26
27
28
29
30
31
32#define CPUFREQ_ETERNAL (-1)
33#define CPUFREQ_NAME_LEN 16
34
35#define CPUFREQ_NAME_PLEN (CPUFREQ_NAME_LEN + 1)
36
37struct cpufreq_governor;
38
39enum cpufreq_table_sorting {
40 CPUFREQ_TABLE_UNSORTED,
41 CPUFREQ_TABLE_SORTED_ASCENDING,
42 CPUFREQ_TABLE_SORTED_DESCENDING
43};
44
45struct cpufreq_freqs {
46 unsigned int cpu;
47 unsigned int old;
48 unsigned int new;
49 u8 flags;
50};
51
52struct cpufreq_cpuinfo {
53 unsigned int max_freq;
54 unsigned int min_freq;
55
56
57 unsigned int transition_latency;
58};
59
60struct cpufreq_user_policy {
61 unsigned int min;
62 unsigned int max;
63};
64
65struct cpufreq_policy {
66
67 cpumask_var_t cpus;
68 cpumask_var_t related_cpus;
69 cpumask_var_t real_cpus;
70
71 unsigned int shared_type;
72
73 unsigned int cpu;
74
75 struct clk *clk;
76 struct cpufreq_cpuinfo cpuinfo;
77
78 unsigned int min;
79 unsigned int max;
80 unsigned int cur;
81
82 unsigned int restore_freq;
83 unsigned int suspend_freq;
84
85 unsigned int policy;
86 unsigned int last_policy;
87 struct cpufreq_governor *governor;
88 void *governor_data;
89 char last_governor[CPUFREQ_NAME_LEN];
90
91 struct work_struct update;
92
93
94 struct cpufreq_user_policy user_policy;
95 struct cpufreq_frequency_table *freq_table;
96 enum cpufreq_table_sorting freq_table_sorted;
97
98 struct list_head policy_list;
99 struct kobject kobj;
100 struct completion kobj_unregister;
101
102
103
104
105
106
107
108
109
110 struct rw_semaphore rwsem;
111
112
113
114
115
116
117
118
119
120 bool fast_switch_possible;
121 bool fast_switch_enabled;
122
123
124 unsigned int cached_target_freq;
125 int cached_resolved_idx;
126
127
128 bool transition_ongoing;
129 spinlock_t transition_lock;
130 wait_queue_head_t transition_wait;
131 struct task_struct *transition_task;
132
133
134 struct cpufreq_stats *stats;
135
136
137 void *driver_data;
138};
139
140
141#define CPUFREQ_SHARED_TYPE_NONE (0)
142#define CPUFREQ_SHARED_TYPE_HW (1)
143#define CPUFREQ_SHARED_TYPE_ALL (2)
144#define CPUFREQ_SHARED_TYPE_ANY (3)
145
146#ifdef CONFIG_CPU_FREQ
147struct cpufreq_policy *cpufreq_cpu_get_raw(unsigned int cpu);
148struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu);
149void cpufreq_cpu_put(struct cpufreq_policy *policy);
150#else
151static inline struct cpufreq_policy *cpufreq_cpu_get_raw(unsigned int cpu)
152{
153 return NULL;
154}
155static inline struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu)
156{
157 return NULL;
158}
159static inline void cpufreq_cpu_put(struct cpufreq_policy *policy) { }
160#endif
161
162static inline bool policy_is_shared(struct cpufreq_policy *policy)
163{
164 return cpumask_weight(policy->cpus) > 1;
165}
166
167
168extern struct kobject *cpufreq_global_kobject;
169
170#ifdef CONFIG_CPU_FREQ
171unsigned int cpufreq_get(unsigned int cpu);
172unsigned int cpufreq_quick_get(unsigned int cpu);
173unsigned int cpufreq_quick_get_max(unsigned int cpu);
174void disable_cpufreq(void);
175
176u64 get_cpu_idle_time(unsigned int cpu, u64 *wall, int io_busy);
177int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
178int cpufreq_update_policy(unsigned int cpu);
179bool have_governor_per_policy(void);
180struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy);
181void cpufreq_enable_fast_switch(struct cpufreq_policy *policy);
182void cpufreq_disable_fast_switch(struct cpufreq_policy *policy);
183#else
184static inline unsigned int cpufreq_get(unsigned int cpu)
185{
186 return 0;
187}
188static inline unsigned int cpufreq_quick_get(unsigned int cpu)
189{
190 return 0;
191}
192static inline unsigned int cpufreq_quick_get_max(unsigned int cpu)
193{
194 return 0;
195}
196static inline void disable_cpufreq(void) { }
197#endif
198
199#ifdef CONFIG_CPU_FREQ_STAT
200void cpufreq_stats_create_table(struct cpufreq_policy *policy);
201void cpufreq_stats_free_table(struct cpufreq_policy *policy);
202void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
203 unsigned int new_freq);
204#else
205static inline void cpufreq_stats_create_table(struct cpufreq_policy *policy) { }
206static inline void cpufreq_stats_free_table(struct cpufreq_policy *policy) { }
207static inline void cpufreq_stats_record_transition(struct cpufreq_policy *policy,
208 unsigned int new_freq) { }
209#endif
210
211
212
213
214
215#define CPUFREQ_RELATION_L 0
216#define CPUFREQ_RELATION_H 1
217#define CPUFREQ_RELATION_C 2
218
219struct freq_attr {
220 struct attribute attr;
221 ssize_t (*show)(struct cpufreq_policy *, char *);
222 ssize_t (*store)(struct cpufreq_policy *, const char *, size_t count);
223};
224
225#define cpufreq_freq_attr_ro(_name) \
226static struct freq_attr _name = \
227__ATTR(_name, 0444, show_##_name, NULL)
228
229#define cpufreq_freq_attr_ro_perm(_name, _perm) \
230static struct freq_attr _name = \
231__ATTR(_name, _perm, show_##_name, NULL)
232
233#define cpufreq_freq_attr_rw(_name) \
234static struct freq_attr _name = \
235__ATTR(_name, 0644, show_##_name, store_##_name)
236
237struct global_attr {
238 struct attribute attr;
239 ssize_t (*show)(struct kobject *kobj,
240 struct attribute *attr, char *buf);
241 ssize_t (*store)(struct kobject *a, struct attribute *b,
242 const char *c, size_t count);
243};
244
245#define define_one_global_ro(_name) \
246static struct global_attr _name = \
247__ATTR(_name, 0444, show_##_name, NULL)
248
249#define define_one_global_rw(_name) \
250static struct global_attr _name = \
251__ATTR(_name, 0644, show_##_name, store_##_name)
252
253
254struct cpufreq_driver {
255 char name[CPUFREQ_NAME_LEN];
256 u8 flags;
257 void *driver_data;
258
259
260 int (*init)(struct cpufreq_policy *policy);
261 int (*verify)(struct cpufreq_policy *policy);
262
263
264 int (*setpolicy)(struct cpufreq_policy *policy);
265
266
267
268
269
270 int (*target)(struct cpufreq_policy *policy,
271 unsigned int target_freq,
272 unsigned int relation);
273 int (*target_index)(struct cpufreq_policy *policy,
274 unsigned int index);
275 unsigned int (*fast_switch)(struct cpufreq_policy *policy,
276 unsigned int target_freq);
277
278
279
280
281
282
283
284 unsigned int (*resolve_freq)(struct cpufreq_policy *policy,
285 unsigned int target_freq);
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302 unsigned int (*get_intermediate)(struct cpufreq_policy *policy,
303 unsigned int index);
304 int (*target_intermediate)(struct cpufreq_policy *policy,
305 unsigned int index);
306
307
308 unsigned int (*get)(unsigned int cpu);
309
310
311 int (*bios_limit)(int cpu, unsigned int *limit);
312
313 int (*exit)(struct cpufreq_policy *policy);
314 void (*stop_cpu)(struct cpufreq_policy *policy);
315 int (*suspend)(struct cpufreq_policy *policy);
316 int (*resume)(struct cpufreq_policy *policy);
317
318
319 void (*ready)(struct cpufreq_policy *policy);
320
321 struct freq_attr **attr;
322
323
324 bool boost_enabled;
325 int (*set_boost)(int state);
326};
327
328
329#define CPUFREQ_STICKY (1 << 0)
330
331#define CPUFREQ_CONST_LOOPS (1 << 1)
332
333
334
335#define CPUFREQ_PM_NO_WARN (1 << 2)
336
337
338
339
340
341
342
343
344#define CPUFREQ_HAVE_GOVERNOR_PER_POLICY (1 << 3)
345
346
347
348
349
350
351#define CPUFREQ_ASYNC_NOTIFICATION (1 << 4)
352
353
354
355
356
357
358
359
360#define CPUFREQ_NEED_INITIAL_FREQ_CHECK (1 << 5)
361
362int cpufreq_register_driver(struct cpufreq_driver *driver_data);
363int cpufreq_unregister_driver(struct cpufreq_driver *driver_data);
364
365const char *cpufreq_get_current_driver(void);
366void *cpufreq_get_driver_data(void);
367
368static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy,
369 unsigned int min, unsigned int max)
370{
371 if (policy->min < min)
372 policy->min = min;
373 if (policy->max < min)
374 policy->max = min;
375 if (policy->min > max)
376 policy->min = max;
377 if (policy->max > max)
378 policy->max = max;
379 if (policy->min > policy->max)
380 policy->min = policy->max;
381 return;
382}
383
384static inline void
385cpufreq_verify_within_cpu_limits(struct cpufreq_policy *policy)
386{
387 cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
388 policy->cpuinfo.max_freq);
389}
390
391#ifdef CONFIG_CPU_FREQ
392void cpufreq_suspend(void);
393void cpufreq_resume(void);
394int cpufreq_generic_suspend(struct cpufreq_policy *policy);
395#else
396static inline void cpufreq_suspend(void) {}
397static inline void cpufreq_resume(void) {}
398#endif
399
400
401
402
403
404#define CPUFREQ_TRANSITION_NOTIFIER (0)
405#define CPUFREQ_POLICY_NOTIFIER (1)
406
407
408#define CPUFREQ_PRECHANGE (0)
409#define CPUFREQ_POSTCHANGE (1)
410
411
412#define CPUFREQ_ADJUST (0)
413#define CPUFREQ_NOTIFY (1)
414#define CPUFREQ_START (2)
415#define CPUFREQ_CREATE_POLICY (3)
416#define CPUFREQ_REMOVE_POLICY (4)
417
418#ifdef CONFIG_CPU_FREQ
419int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list);
420int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list);
421
422void cpufreq_freq_transition_begin(struct cpufreq_policy *policy,
423 struct cpufreq_freqs *freqs);
424void cpufreq_freq_transition_end(struct cpufreq_policy *policy,
425 struct cpufreq_freqs *freqs, int transition_failed);
426
427#else
428static inline int cpufreq_register_notifier(struct notifier_block *nb,
429 unsigned int list)
430{
431 return 0;
432}
433static inline int cpufreq_unregister_notifier(struct notifier_block *nb,
434 unsigned int list)
435{
436 return 0;
437}
438#endif
439
440
441
442
443
444
445
446
447
448
449
450static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
451 u_int mult)
452{
453#if BITS_PER_LONG == 32
454 u64 result = ((u64) old) * ((u64) mult);
455 do_div(result, div);
456 return (unsigned long) result;
457
458#elif BITS_PER_LONG == 64
459 unsigned long result = old * ((u64) mult);
460 result /= div;
461 return result;
462#endif
463}
464
465
466
467
468
469
470
471
472
473
474#define CPUFREQ_POLICY_POWERSAVE (1)
475#define CPUFREQ_POLICY_PERFORMANCE (2)
476
477
478
479
480
481
482
483
484
485
486#define MIN_SAMPLING_RATE_RATIO (2)
487#define LATENCY_MULTIPLIER (1000)
488#define MIN_LATENCY_MULTIPLIER (20)
489#define TRANSITION_LATENCY_LIMIT (10 * 1000 * 1000)
490
491struct cpufreq_governor {
492 char name[CPUFREQ_NAME_LEN];
493 int (*init)(struct cpufreq_policy *policy);
494 void (*exit)(struct cpufreq_policy *policy);
495 int (*start)(struct cpufreq_policy *policy);
496 void (*stop)(struct cpufreq_policy *policy);
497 void (*limits)(struct cpufreq_policy *policy);
498 ssize_t (*show_setspeed) (struct cpufreq_policy *policy,
499 char *buf);
500 int (*store_setspeed) (struct cpufreq_policy *policy,
501 unsigned int freq);
502 unsigned int max_transition_latency;
503
504
505 struct list_head governor_list;
506 struct module *owner;
507};
508
509
510unsigned int cpufreq_driver_fast_switch(struct cpufreq_policy *policy,
511 unsigned int target_freq);
512int cpufreq_driver_target(struct cpufreq_policy *policy,
513 unsigned int target_freq,
514 unsigned int relation);
515int __cpufreq_driver_target(struct cpufreq_policy *policy,
516 unsigned int target_freq,
517 unsigned int relation);
518unsigned int cpufreq_driver_resolve_freq(struct cpufreq_policy *policy,
519 unsigned int target_freq);
520int cpufreq_register_governor(struct cpufreq_governor *governor);
521void cpufreq_unregister_governor(struct cpufreq_governor *governor);
522
523struct cpufreq_governor *cpufreq_default_governor(void);
524struct cpufreq_governor *cpufreq_fallback_governor(void);
525
526static inline void cpufreq_policy_apply_limits(struct cpufreq_policy *policy)
527{
528 if (policy->max < policy->cur)
529 __cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
530 else if (policy->min > policy->cur)
531 __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
532}
533
534
535struct gov_attr_set {
536 struct kobject kobj;
537 struct list_head policy_list;
538 struct mutex update_lock;
539 int usage_count;
540};
541
542
543extern const struct sysfs_ops governor_sysfs_ops;
544
545void gov_attr_set_init(struct gov_attr_set *attr_set, struct list_head *list_node);
546void gov_attr_set_get(struct gov_attr_set *attr_set, struct list_head *list_node);
547unsigned int gov_attr_set_put(struct gov_attr_set *attr_set, struct list_head *list_node);
548
549
550struct governor_attr {
551 struct attribute attr;
552 ssize_t (*show)(struct gov_attr_set *attr_set, char *buf);
553 ssize_t (*store)(struct gov_attr_set *attr_set, const char *buf,
554 size_t count);
555};
556
557
558
559
560
561
562#define CPUFREQ_ENTRY_INVALID ~0u
563#define CPUFREQ_TABLE_END ~1u
564
565#define CPUFREQ_BOOST_FREQ (1 << 0)
566
567struct cpufreq_frequency_table {
568 unsigned int flags;
569 unsigned int driver_data;
570 unsigned int frequency;
571
572};
573
574#if defined(CONFIG_CPU_FREQ) && defined(CONFIG_PM_OPP)
575int dev_pm_opp_init_cpufreq_table(struct device *dev,
576 struct cpufreq_frequency_table **table);
577void dev_pm_opp_free_cpufreq_table(struct device *dev,
578 struct cpufreq_frequency_table **table);
579#else
580static inline int dev_pm_opp_init_cpufreq_table(struct device *dev,
581 struct cpufreq_frequency_table
582 **table)
583{
584 return -EINVAL;
585}
586
587static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
588 struct cpufreq_frequency_table
589 **table)
590{
591}
592#endif
593
594
595
596
597
598
599
600#define cpufreq_for_each_entry(pos, table) \
601 for (pos = table; pos->frequency != CPUFREQ_TABLE_END; pos++)
602
603
604
605
606
607
608
609
610#define cpufreq_for_each_valid_entry(pos, table) \
611 for (pos = table; pos->frequency != CPUFREQ_TABLE_END; pos++) \
612 if (pos->frequency == CPUFREQ_ENTRY_INVALID) \
613 continue; \
614 else
615
616int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
617 struct cpufreq_frequency_table *table);
618
619int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
620 struct cpufreq_frequency_table *table);
621int cpufreq_generic_frequency_table_verify(struct cpufreq_policy *policy);
622
623int cpufreq_table_index_unsorted(struct cpufreq_policy *policy,
624 unsigned int target_freq,
625 unsigned int relation);
626int cpufreq_frequency_table_get_index(struct cpufreq_policy *policy,
627 unsigned int freq);
628
629ssize_t cpufreq_show_cpus(const struct cpumask *mask, char *buf);
630
631#ifdef CONFIG_CPU_FREQ
632int cpufreq_boost_trigger_state(int state);
633int cpufreq_boost_enabled(void);
634int cpufreq_enable_boost_support(void);
635bool policy_has_boost_freq(struct cpufreq_policy *policy);
636
637
638static inline int cpufreq_table_find_index_al(struct cpufreq_policy *policy,
639 unsigned int target_freq)
640{
641 struct cpufreq_frequency_table *table = policy->freq_table;
642 struct cpufreq_frequency_table *pos, *best = table - 1;
643 unsigned int freq;
644
645 cpufreq_for_each_valid_entry(pos, table) {
646 freq = pos->frequency;
647
648 if (freq >= target_freq)
649 return pos - table;
650
651 best = pos;
652 }
653
654 return best - table;
655}
656
657
658static inline int cpufreq_table_find_index_dl(struct cpufreq_policy *policy,
659 unsigned int target_freq)
660{
661 struct cpufreq_frequency_table *table = policy->freq_table;
662 struct cpufreq_frequency_table *pos, *best = table - 1;
663 unsigned int freq;
664
665 cpufreq_for_each_valid_entry(pos, table) {
666 freq = pos->frequency;
667
668 if (freq == target_freq)
669 return pos - table;
670
671 if (freq > target_freq) {
672 best = pos;
673 continue;
674 }
675
676
677 if (best == table - 1)
678 return pos - table;
679
680 return best - table;
681 }
682
683 return best - table;
684}
685
686
687static inline int cpufreq_table_find_index_l(struct cpufreq_policy *policy,
688 unsigned int target_freq)
689{
690 target_freq = clamp_val(target_freq, policy->min, policy->max);
691
692 if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
693 return cpufreq_table_find_index_al(policy, target_freq);
694 else
695 return cpufreq_table_find_index_dl(policy, target_freq);
696}
697
698
699static inline int cpufreq_table_find_index_ah(struct cpufreq_policy *policy,
700 unsigned int target_freq)
701{
702 struct cpufreq_frequency_table *table = policy->freq_table;
703 struct cpufreq_frequency_table *pos, *best = table - 1;
704 unsigned int freq;
705
706 cpufreq_for_each_valid_entry(pos, table) {
707 freq = pos->frequency;
708
709 if (freq == target_freq)
710 return pos - table;
711
712 if (freq < target_freq) {
713 best = pos;
714 continue;
715 }
716
717
718 if (best == table - 1)
719 return pos - table;
720
721 return best - table;
722 }
723
724 return best - table;
725}
726
727
728static inline int cpufreq_table_find_index_dh(struct cpufreq_policy *policy,
729 unsigned int target_freq)
730{
731 struct cpufreq_frequency_table *table = policy->freq_table;
732 struct cpufreq_frequency_table *pos, *best = table - 1;
733 unsigned int freq;
734
735 cpufreq_for_each_valid_entry(pos, table) {
736 freq = pos->frequency;
737
738 if (freq <= target_freq)
739 return pos - table;
740
741 best = pos;
742 }
743
744 return best - table;
745}
746
747
748static inline int cpufreq_table_find_index_h(struct cpufreq_policy *policy,
749 unsigned int target_freq)
750{
751 target_freq = clamp_val(target_freq, policy->min, policy->max);
752
753 if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
754 return cpufreq_table_find_index_ah(policy, target_freq);
755 else
756 return cpufreq_table_find_index_dh(policy, target_freq);
757}
758
759
760static inline int cpufreq_table_find_index_ac(struct cpufreq_policy *policy,
761 unsigned int target_freq)
762{
763 struct cpufreq_frequency_table *table = policy->freq_table;
764 struct cpufreq_frequency_table *pos, *best = table - 1;
765 unsigned int freq;
766
767 cpufreq_for_each_valid_entry(pos, table) {
768 freq = pos->frequency;
769
770 if (freq == target_freq)
771 return pos - table;
772
773 if (freq < target_freq) {
774 best = pos;
775 continue;
776 }
777
778
779 if (best == table - 1)
780 return pos - table;
781
782
783 if (target_freq - best->frequency > freq - target_freq)
784 return pos - table;
785
786 return best - table;
787 }
788
789 return best - table;
790}
791
792
793static inline int cpufreq_table_find_index_dc(struct cpufreq_policy *policy,
794 unsigned int target_freq)
795{
796 struct cpufreq_frequency_table *table = policy->freq_table;
797 struct cpufreq_frequency_table *pos, *best = table - 1;
798 unsigned int freq;
799
800 cpufreq_for_each_valid_entry(pos, table) {
801 freq = pos->frequency;
802
803 if (freq == target_freq)
804 return pos - table;
805
806 if (freq > target_freq) {
807 best = pos;
808 continue;
809 }
810
811
812 if (best == table - 1)
813 return pos - table;
814
815
816 if (best->frequency - target_freq > target_freq - freq)
817 return pos - table;
818
819 return best - table;
820 }
821
822 return best - table;
823}
824
825
826static inline int cpufreq_table_find_index_c(struct cpufreq_policy *policy,
827 unsigned int target_freq)
828{
829 target_freq = clamp_val(target_freq, policy->min, policy->max);
830
831 if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
832 return cpufreq_table_find_index_ac(policy, target_freq);
833 else
834 return cpufreq_table_find_index_dc(policy, target_freq);
835}
836
837static inline int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
838 unsigned int target_freq,
839 unsigned int relation)
840{
841 if (unlikely(policy->freq_table_sorted == CPUFREQ_TABLE_UNSORTED))
842 return cpufreq_table_index_unsorted(policy, target_freq,
843 relation);
844
845 switch (relation) {
846 case CPUFREQ_RELATION_L:
847 return cpufreq_table_find_index_l(policy, target_freq);
848 case CPUFREQ_RELATION_H:
849 return cpufreq_table_find_index_h(policy, target_freq);
850 case CPUFREQ_RELATION_C:
851 return cpufreq_table_find_index_c(policy, target_freq);
852 default:
853 pr_err("%s: Invalid relation: %d\n", __func__, relation);
854 return -EINVAL;
855 }
856}
857#else
858static inline int cpufreq_boost_trigger_state(int state)
859{
860 return 0;
861}
862static inline int cpufreq_boost_enabled(void)
863{
864 return 0;
865}
866
867static inline int cpufreq_enable_boost_support(void)
868{
869 return -EINVAL;
870}
871
872static inline bool policy_has_boost_freq(struct cpufreq_policy *policy)
873{
874 return false;
875}
876#endif
877
878
879extern struct freq_attr cpufreq_freq_attr_scaling_available_freqs;
880extern struct freq_attr cpufreq_freq_attr_scaling_boost_freqs;
881extern struct freq_attr *cpufreq_generic_attr[];
882int cpufreq_table_validate_and_show(struct cpufreq_policy *policy,
883 struct cpufreq_frequency_table *table);
884
885unsigned int cpufreq_generic_get(unsigned int cpu);
886int cpufreq_generic_init(struct cpufreq_policy *policy,
887 struct cpufreq_frequency_table *table,
888 unsigned int transition_latency);
889#endif
890