Several drivers create their own devicetree property when they register
poweroff capabilities. This is for example the case for mfd, regulator
or power drivers which define "vendor,system-power-controller" property.
This patch adds support for a standard property "poweroff-source"
which marks the device as able to shutdown the system.
Signed-off-by: Romain Perier <romain.perier@xxxxxxxxx>
---
include/linux/of.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/include/linux/of.h b/include/linux/of.h
index 6545e7a..27b3ba1 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -866,4 +866,15 @@ static inline int of_changeset_update_property(struct of_changeset *ocs,
/* CONFIG_OF_RESOLVE api */
extern int of_resolve_phandles(struct device_node *tree);
+/**
+ * of_system_has_poweroff_source - Tells if poweroff-source is found for device_node
+ * @np: Pointer to the given device_node
+ *
+ * return true if present false otherwise
+ */
+static inline bool of_system_has_poweroff_source(const struct device_node *np)
+{
+ return of_property_read_bool(np, "poweroff-source");
+}
+
#endif /* _LINUX_OF_H */
--
1.9.1
--
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