diff options
Diffstat (limited to 'drivers/base/power/domain.c')
| -rw-r--r-- | drivers/base/power/domain.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 18cd7965e5d6..f0d70d07d0a6 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -487,6 +487,29 @@ void dev_pm_genpd_set_next_wakeup(struct device *dev, ktime_t next) } EXPORT_SYMBOL_GPL(dev_pm_genpd_set_next_wakeup); +/** + * dev_pm_genpd_get_next_hrtimer - Return genpd domain next_hrtimer. + * + * @dev: Device to handle + * + * Returns the aggregated domain wakeup time for CPU PM domain + * when all the subdomains are off. + */ +ktime_t dev_pm_genpd_get_next_hrtimer(struct device *dev) +{ + struct generic_pm_domain *genpd; + + genpd = dev_to_genpd_safe(dev); + if (!genpd) + return KTIME_MAX; + + if (atomic_read(&genpd->sd_count) > 0) + return KTIME_MAX; + + return genpd->next_hrtimer; +} +EXPORT_SYMBOL_GPL(dev_pm_genpd_get_next_hrtimer); + static int _genpd_power_on(struct generic_pm_domain *genpd, bool timed) { unsigned int state_idx = genpd->state_idx; @@ -1998,6 +2021,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd, genpd->max_off_time_changed = true; genpd->provider = NULL; genpd->has_provider = false; + genpd->next_hrtimer = KTIME_MAX; genpd->accounting_time = ktime_get_mono_fast_ns(); genpd->domain.ops.runtime_suspend = genpd_runtime_suspend; genpd->domain.ops.runtime_resume = genpd_runtime_resume; |