Merge branch 'v3.4-for-rafael' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into pm-domains

* 'v3.4-for-rafael' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Hook up power domains to generic power domain infrastructure
  PM / Domains: Add OF support

1 files changed, 32 insertions, 0 deletions

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 12a03afe5305..d2c03239abcf 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1230,6 +1230,38 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
 }
 
 /**
+ * __pm_genpd_of_add_device - Add a device to an I/O PM domain.
+ * @genpd_node: Device tree node pointer representing a PM domain to which the
+ *   the device is added to.
+ * @dev: Device to be added.
+ * @td: Set of PM QoS timing parameters to attach to the device.
+ */
+int __pm_genpd_of_add_device(struct device_node *genpd_node, struct device *dev,
+                             struct gpd_timing_data *td)
+{
+        struct generic_pm_domain *genpd = NULL, *gpd;
+
+        dev_dbg(dev, "%s()\n", __func__);
+
+        if (IS_ERR_OR_NULL(genpd_node) || IS_ERR_OR_NULL(dev))
+                return -EINVAL;
+
+        mutex_lock(&gpd_list_lock);
+        list_for_each_entry(gpd, &gpd_list, gpd_list_node) {
+                if (gpd->of_node == genpd_node) {
+                        genpd = gpd;
+                        break;
+                }
+        }
+        mutex_unlock(&gpd_list_lock);
+
+        if (!genpd)
+                return -EINVAL;
+
+        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.
  * @dev: Device to be removed.