diff options
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/domain.c | 26 | ||||
| -rw-r--r-- | drivers/base/power/domain_governor.c | 3 |
2 files changed, 29 insertions, 0 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index ead135c7044c..c2dec386c72e 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -494,6 +494,31 @@ 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 the next_hrtimer for the genpd + * @dev: A device that is attached to the genpd. + * + * This routine should typically be called for a device, at the point of when a + * GENPD_NOTIFY_PRE_OFF notification has been sent for it. + * + * Returns the aggregated value of the genpd's next hrtimer or KTIME_MAX if no + * valid value have been set. + */ +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 (genpd->gd) + return genpd->gd->next_hrtimer; + + return KTIME_MAX; +} +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; @@ -1994,6 +2019,7 @@ static int genpd_alloc_data(struct generic_pm_domain *genpd) gd->max_off_time_ns = -1; gd->max_off_time_changed = true; gd->next_wakeup = KTIME_MAX; + gd->next_hrtimer = KTIME_MAX; } /* Use only one "off" state if there were no states declared */ diff --git a/drivers/base/power/domain_governor.c b/drivers/base/power/domain_governor.c index 282a3a135827..cc2c3a5a6d35 100644 --- a/drivers/base/power/domain_governor.c +++ b/drivers/base/power/domain_governor.c @@ -375,6 +375,9 @@ static bool cpu_power_down_ok(struct dev_pm_domain *pd) if (idle_duration_ns <= 0) return false; + /* Store the next domain_wakeup to allow consumers to use it. */ + genpd->gd->next_hrtimer = domain_wakeup; + /* * Find the deepest idle state that has its residency value satisfied * and by also taking into account the power off latency for the state. |