diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-01 00:02:10 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-01 21:47:58 +0100 |
| commit | 221e9b58380abdd6c05e11b4538597e2586ee141 (patch) | |
| tree | acc8e06b6f05050f5deec0c90e6fe63a8a09bdf1 /drivers/base/power/domain.c | |
| parent | b02c999ac325e977585abeb4caf6e0a2ee21e30b (diff) | |
PM / Domains: Add default power off governor function (v4)
Add a function deciding whether or not a given PM domain should
be powered off on the basis of the PM QoS constraints of devices
belonging to it and their PM QoS timing data.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/base/power/domain.c')
| -rw-r--r-- | drivers/base/power/domain.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 3af9f5a71ad5..91896194e76b 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -398,6 +398,17 @@ static int pm_genpd_poweroff(struct generic_pm_domain *genpd) } genpd->status = GPD_STATE_POWER_OFF; + genpd->power_off_time = ktime_get(); + + /* Update PM QoS information for devices in the domain. */ + list_for_each_entry_reverse(pdd, &genpd->dev_list, list_node) { + struct gpd_timing_data *td = &to_gpd_data(pdd)->td; + + pm_runtime_update_max_time_suspended(pdd->dev, + td->start_latency_ns + + td->restore_state_latency_ns + + genpd->power_on_latency_ns); + } list_for_each_entry(link, &genpd->slave_links, slave_node) { genpd_sd_counter_dec(link->master); @@ -1487,6 +1498,7 @@ void pm_genpd_init(struct generic_pm_domain *genpd, genpd->resume_count = 0; genpd->device_count = 0; genpd->suspended_count = 0; + genpd->max_off_time_ns = -1; genpd->domain.ops.runtime_suspend = pm_genpd_runtime_suspend; genpd->domain.ops.runtime_resume = pm_genpd_runtime_resume; genpd->domain.ops.runtime_idle = pm_generic_runtime_idle; |