diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/power/domain.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 058c8b6d2871..e12d3a8a29a9 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1502,6 +1502,52 @@ struct generic_pm_domain *of_genpd_get_from_provider( EXPORT_SYMBOL_GPL(of_genpd_get_from_provider); /** + * of_genpd_add_device() - Add a device to an I/O PM domain + * @genpdspec: OF phandle args to use for look-up PM domain + * @dev: Device to be added. + * + * Looks-up an I/O PM domain based upon phandle args provided and adds + * the device to the PM domain. Returns a negative error code on failure. + */ +int of_genpd_add_device(struct of_phandle_args *genpdspec, struct device *dev) +{ + struct generic_pm_domain *genpd; + + genpd = of_genpd_get_from_provider(genpdspec); + if (IS_ERR(genpd)) + return PTR_ERR(genpd); + + return pm_genpd_add_device(genpd, dev); +} +EXPORT_SYMBOL_GPL(of_genpd_add_device); + +/** + * of_genpd_add_subdomain - Add a subdomain to an I/O PM domain. + * @parent_spec: OF phandle args to use for parent PM domain look-up + * @subdomain_spec: OF phandle args to use for subdomain look-up + * + * Looks-up a parent PM domain and subdomain based upon phandle args + * provided and adds the subdomain to the parent PM domain. Returns a + * negative error code on failure. + */ +int of_genpd_add_subdomain(struct of_phandle_args *parent_spec, + struct of_phandle_args *subdomain_spec) +{ + struct generic_pm_domain *parent, *subdomain; + + parent = of_genpd_get_from_provider(parent_spec); + if (IS_ERR(parent)) + return PTR_ERR(parent); + + subdomain = of_genpd_get_from_provider(subdomain_spec); + if (IS_ERR(subdomain)) + return PTR_ERR(subdomain); + + return pm_genpd_add_subdomain(parent, subdomain); +} +EXPORT_SYMBOL_GPL(of_genpd_add_subdomain); + +/** * genpd_dev_pm_detach - Detach a device from its PM domain. * @dev: Device to detach. * @power_off: Currently not used |