regulator: mc13892: add device tree probe support
It adds device tree probe support for mc13892-regulator driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/mc13xxx-regulator-core.c b/drivers/regulator/mc13xxx-regulator-core.c
index 6532853..80ecafe 100644
--- a/drivers/regulator/mc13xxx-regulator-core.c
+++ b/drivers/regulator/mc13xxx-regulator-core.c
@@ -18,12 +18,14 @@
#include <linux/mfd/mc13xxx.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
#include <linux/platform_device.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/module.h>
+#include <linux/of.h>
#include "mc13xxx.h"
static int mc13xxx_regulator_enable(struct regulator_dev *rdev)
@@ -236,6 +238,61 @@
}
EXPORT_SYMBOL_GPL(mc13xxx_sw_regulator_is_enabled);
+#ifdef CONFIG_OF
+int __devinit mc13xxx_get_num_regulators_dt(struct platform_device *pdev)
+{
+ struct device_node *parent, *child;
+ int num = 0;
+
+ of_node_get(pdev->dev.parent->of_node);
+ parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
+ if (!parent)
+ return -ENODEV;
+
+ for_each_child_of_node(parent, child)
+ num++;
+
+ return num;
+}
+
+struct mc13xxx_regulator_init_data * __devinit mc13xxx_parse_regulators_dt(
+ struct platform_device *pdev, struct mc13xxx_regulator *regulators,
+ int num_regulators)
+{
+ struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
+ struct mc13xxx_regulator_init_data *data, *p;
+ struct device_node *parent, *child;
+ int i;
+
+ of_node_get(pdev->dev.parent->of_node);
+ parent = of_find_node_by_name(pdev->dev.parent->of_node, "regulators");
+ if (!parent)
+ return NULL;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(*data) * priv->num_regulators,
+ GFP_KERNEL);
+ if (!data)
+ return NULL;
+ p = data;
+
+ for_each_child_of_node(parent, child) {
+ for (i = 0; i < num_regulators; i++) {
+ if (!of_node_cmp(child->name,
+ regulators[i].desc.name)) {
+ p->id = i;
+ p->init_data = of_get_regulator_init_data(
+ &pdev->dev, child);
+ p->node = child;
+ p++;
+ break;
+ }
+ }
+ }
+
+ return data;
+}
+#endif
+
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Yong Shen <yong.shen@linaro.org>");
MODULE_DESCRIPTION("Regulator Driver for Freescale MC13xxx PMIC");