diff options
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9bf97a366029..c426d21822f7 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -524,6 +524,21 @@ unsigned int cpufreq_driver_resolve_freq(struct cpufreq_policy *policy, } EXPORT_SYMBOL_GPL(cpufreq_driver_resolve_freq); +unsigned int cpufreq_policy_transition_delay_us(struct cpufreq_policy *policy) +{ + unsigned int latency; + + if (policy->transition_delay_us) + return policy->transition_delay_us; + + latency = policy->cpuinfo.transition_latency / NSEC_PER_USEC; + if (latency) + return latency * LATENCY_MULTIPLIER; + + return LATENCY_MULTIPLIER; +} +EXPORT_SYMBOL_GPL(cpufreq_policy_transition_delay_us); + /********************************************************************* * SYSFS INTERFACE * *********************************************************************/ |