2 files changed, 57 insertions, 13 deletions

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 5f4606f13be6..ac06d0280b42 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1465,6 +1465,33 @@ int __pm_genpd_of_add_device(struct device_node *genpd_node, struct device *dev,
         return __pm_genpd_add_device(genpd, dev, td);
 }
 
+
+/**
+ * __pm_genpd_name_add_device - Find I/O PM domain and add a device to it.
+ * @domain_name: Name of the PM domain to add the device to.
+ * @dev: Device to be added.
+ * @td: Set of PM QoS timing parameters to attach to the device.
+ */
+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);
+}
+
 /**
  * pm_genpd_remove_device - Remove a device from an I/O PM domain.
  * @genpd: PM domain to remove the device from.
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 08adf8e5a80e..1991a92b0567 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -138,17 +138,9 @@ extern int __pm_genpd_of_add_device(struct device_node *genpd_node,
                                     struct device *dev,
                                     struct gpd_timing_data *td);
 
-static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
-                                      struct device *dev)
-{
-        return __pm_genpd_add_device(genpd, dev, NULL);
-}
-
-static inline int pm_genpd_of_add_device(struct device_node *genpd_node,
-                                         struct device *dev)
-{
-        return __pm_genpd_of_add_device(genpd_node, dev, NULL);
-}
+extern int __pm_genpd_name_add_device(const char *domain_name,
+                                      struct device *dev,
+                                      struct gpd_timing_data *td);
 
 extern int pm_genpd_remove_device(struct generic_pm_domain *genpd,
                                   struct device *dev);
@@ -187,8 +179,15 @@ static inline int __pm_genpd_add_device(struct generic_pm_domain *genpd,
 {
         return -ENOSYS;
 }
-static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
-                                      struct device *dev)
+static inline int __pm_genpd_of_add_device(struct device_node *genpd_node,
+                                           struct device *dev,
+                                           struct gpd_timing_data *td)
+{
+        return -ENOSYS;
+}
+static inline int __pm_genpd_name_add_device(const char *domain_name,
+                                             struct device *dev,
+                                             struct gpd_timing_data *td)
 {
         return -ENOSYS;
 }
@@ -242,6 +241,24 @@ static inline bool default_stop_ok(struct device *dev)
 #define pm_domain_always_on_gov NULL
 #endif
 
+static inline int pm_genpd_add_device(struct generic_pm_domain *genpd,
+                                      struct device *dev)
+{
+        return __pm_genpd_add_device(genpd, dev, NULL);
+}
+
+static inline int pm_genpd_of_add_device(struct device_node *genpd_node,
+                                         struct device *dev)
+{
+        return __pm_genpd_of_add_device(genpd_node, dev, NULL);
+}
+
+static inline int pm_genpd_name_add_device(const char *domain_name,
+                                           struct device *dev)
+{
+        return __pm_genpd_name_add_device(domain_name, dev, NULL);
+}
+
 static inline int pm_genpd_remove_callbacks(struct device *dev)
 {
         return __pm_genpd_remove_callbacks(dev, true);