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authorViresh Kumar <viresh.kumar@linaro.org>2018-01-12 07:33:45 +0300
committerViresh Kumar <viresh.kumar@linaro.org>2018-05-09 07:45:19 +0300
commite2f4b5f8dc59c28605a320ea923905e519fd2ca7 (patch)
tree3cd38123affd84dd6b6f58a79e583cb98673a85a /drivers/opp
parenta88bd2a51e901ed8081841d647157de8153df813 (diff)
downloadlinux-e2f4b5f8dc59c28605a320ea923905e519fd2ca7.tar.xz
PM / OPP: Implement dev_pm_opp_get_of_node()
This adds a new helper to let the power domain drivers to access opp->np, so that they can read platform specific properties from the node. Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/opp')
-rw-r--r--drivers/opp/of.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/opp/of.c b/drivers/opp/of.c
index 6380ec3d695b..de41e68b780f 100644
--- a/drivers/opp/of.c
+++ b/drivers/opp/of.c
@@ -727,3 +727,22 @@ put_opp_table:
return opp;
}
EXPORT_SYMBOL_GPL(of_dev_pm_opp_find_required_opp);
+
+/**
+ * dev_pm_opp_get_of_node() - Gets the DT node corresponding to an opp
+ * @opp: opp for which DT node has to be returned for
+ *
+ * Return: DT node corresponding to the opp, else 0 on success.
+ *
+ * The caller needs to put the node with of_node_put() after using it.
+ */
+struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp)
+{
+ if (IS_ERR_OR_NULL(opp)) {
+ pr_err("%s: Invalid parameters\n", __func__);
+ return NULL;
+ }
+
+ return of_node_get(opp->np);
+}
+EXPORT_SYMBOL_GPL(dev_pm_opp_get_of_node);