diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2014-09-25 16:28:28 (GMT) |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-09-25 20:08:41 (GMT) |
| commit | d79b6fe17aa279c7015a9c4ee88809dad4be9959 (patch) | |
| tree | 243cdfa1fc71557e944e99e023993961cdb778e8 /drivers/base | |
| parent | 2bd5306a8764d9496f3e3d90c4e608c247fcfd31 (diff) | |
| download | linux-d79b6fe17aa279c7015a9c4ee88809dad4be9959.tar.xz | |
PM / Domains: Add genpd attach/detach callbacks
While a PM domain can enable PM runtime management of its devices' module
clocks by setting
genpd->dev_ops.stop = pm_clk_suspend;
genpd->dev_ops.start = pm_clk_resume;
this also requires registering the clocks with the pm_clk subsystem.
In the legacy case, this is handled by the platform code, after
attaching the device to its PM domain.
When the devices are instantiated from DT, devices are attached to their
PM domains by generic code, leaving no method for the platform-specific
PM domain code to register their clocks.
Add two callbacks, allowing a PM domain to perform platform-specific
tasks when a device is attached to or detached from a PM domain.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/domain.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index cd40057..2a9f4c5 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1436,6 +1436,9 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev, spin_unlock_irq(&dev->power.lock); + if (genpd->attach_dev) + genpd->attach_dev(dev); + mutex_lock(&gpd_data->lock); gpd_data->base.dev = dev; list_add_tail(&gpd_data->base.list_node, &genpd->dev_list); @@ -1528,6 +1531,9 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd, genpd->device_count--; genpd->max_off_time_changed = true; + if (genpd->detach_dev) + genpd->detach_dev(dev); + spin_lock_irq(&dev->power.lock); dev->pm_domain = NULL; |