regulator/of_get_regulator: add child path to find the regulator supplier (fe06051d) · Commits · 戴 / test

drivers/regulator/core.c

+35 −0

Original line number	Diff line number	Diff line
		@@ -227,6 +227,37 @@ static void regulator_unlock_supply(struct regulator_dev *rdev)
		}
		}

		/**
		* of_get_child_regulator - get a child regulator device node
		* based on supply name
		* @parent: Parent device node
		* @prop_name: Combination regulator supply name and "-supply"
		*
		* Traverse all child nodes.
		* Extract the child regulator device node corresponding to the supply name.
		* returns the device node corresponding to the regulator if found, else
		* returns NULL.
		*/
		static struct device_node of_get_child_regulator(struct device_node parent,
		const char *prop_name)
		{
		struct device_node *regnode = NULL;
		struct device_node *child = NULL;

		for_each_child_of_node(parent, child) {
		regnode = of_parse_phandle(child, prop_name, 0);

		if (!regnode) {
		regnode = of_get_child_regulator(child, prop_name);
		if (regnode)
		return regnode;
		} else {
		return regnode;
		}
		}
		return NULL;
		}

		/**
		* of_get_regulator - get a regulator device node based on supply name
		* @dev: Device pointer for the consumer (of regulator) device
		@@ -247,6 +278,10 @@ static struct device_node of_get_regulator(struct device dev, const char *supp
		regnode = of_parse_phandle(dev->of_node, prop_name, 0);

		if (!regnode) {
		regnode = of_get_child_regulator(dev->of_node, prop_name);
		if (regnode)
		return regnode;

		dev_dbg(dev, "Looking up %s property in node %pOF failed\n",
		prop_name, dev->of_node);
		return NULL;