diff options
| -rw-r--r-- | drivers/base/power/domain.c | 46 | ||||
| -rw-r--r-- | include/linux/pm_domain.h | 5 |
2 files changed, 36 insertions, 15 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index cddf818..4d63340 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -53,6 +53,24 @@ static LIST_HEAD(gpd_list); static DEFINE_MUTEX(gpd_list_lock); +static struct generic_pm_domain *pm_genpd_lookup_name(const char *domain_name) +{ + struct generic_pm_domain *genpd = NULL, *gpd; + + if (IS_ERR_OR_NULL(domain_name)) + return NULL; + + mutex_lock(&gpd_list_lock); + list_for_each_entry(gpd, &gpd_list, gpd_list_node) { + if (!strcmp(gpd->name, domain_name)) { + genpd = gpd; + break; + } + } + mutex_unlock(&gpd_list_lock); + return genpd; +} + #ifdef CONFIG_PM struct generic_pm_domain *dev_to_genpd(struct device *dev) @@ -262,6 +280,18 @@ int pm_genpd_poweron(struct generic_pm_domain *genpd) return ret; } +/** + * pm_genpd_name_poweron - Restore power to a given PM domain and its masters. + * @domain_name: Name of the PM domain to power up. + */ +int pm_genpd_name_poweron(const char *domain_name) +{ + struct generic_pm_domain *genpd; + + genpd = pm_genpd_lookup_name(domain_name); + return genpd ? pm_genpd_poweron(genpd) : -EINVAL; +} + #endif /* CONFIG_PM */ #ifdef CONFIG_PM_RUNTIME @@ -1475,21 +1505,7 @@ int __pm_genpd_of_add_device(struct device_node *genpd_node, struct device *dev, int __pm_genpd_name_add_device(const char *domain_name, struct device *dev, struct gpd_timing_data *td) { - struct generic_pm_domain *genpd = NULL, *gpd; - - if (IS_ERR_OR_NULL(domain_name) || IS_ERR_OR_NULL(dev)) - return -EINVAL; - - mutex_lock(&gpd_list_lock); - list_for_each_entry(gpd, &gpd_list, gpd_list_node) { - if (!strcmp(gpd->name, domain_name)) { - genpd = gpd; - break; - } - } - mutex_unlock(&gpd_list_lock); - - return __pm_genpd_add_device(genpd, dev, td); + return __pm_genpd_add_device(pm_genpd_lookup_name(domain_name), dev, td); } /** diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 8dbf48b..d9d6083 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -161,6 +161,7 @@ extern void pm_genpd_init(struct generic_pm_domain *genpd, struct dev_power_governor *gov, bool is_off); extern int pm_genpd_poweron(struct generic_pm_domain *genpd); +extern int pm_genpd_name_poweron(const char *domain_name); extern bool default_stop_ok(struct device *dev); @@ -240,6 +241,10 @@ static inline int pm_genpd_poweron(struct generic_pm_domain *genpd) { return -ENOSYS; } +static inline int pm_genpd_name_poweron(const char *domain_name) +{ + return -ENOSYS; +} static inline bool default_stop_ok(struct device *dev) { return false; |
