From bc24ae6701928ec7f3ff1fbf127701b7225d6abc Mon Sep 17 00:00:00 2001
From: Yadwinder Singh Brar <yadi.brar01@gmail.com>
Date: Thu, 5 Jul 2012 09:28:25 +0530
Subject: [PATCH] --- yaml --- r: 312615 b: refs/heads/master c:
 4706fcab9b064e6077404ccb6c5ca9c188758068 h: refs/heads/master i:   312613:
 f7028153da7280231feb3c524918d3ccf6370c7b   312611:
 b4af9e03d310b17787ca7e4d297dfbd82027992d   312607:
 3ee5bf6476d035318ee279789982c386d0daae02 v: v3

---
 [refs]                             |  2 +-
 trunk/drivers/regulator/max77686.c | 58 +++++++++++++++++++++++++++++-
 2 files changed, 58 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index b107f5e5ce50..236184571839 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6c3b956b94a6547d26c805db7c505429e54e7573
+refs/heads/master: 4706fcab9b064e6077404ccb6c5ca9c188758068
diff --git a/trunk/drivers/regulator/max77686.c b/trunk/drivers/regulator/max77686.c
index 23f956a6c5f2..fc695eb3886e 100644
--- a/trunk/drivers/regulator/max77686.c
+++ b/trunk/drivers/regulator/max77686.c
@@ -31,6 +31,7 @@
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
 #include <linux/mfd/max77686.h>
 #include <linux/mfd/max77686-private.h>
 
@@ -233,6 +234,50 @@ static struct regulator_desc regulators[] = {
 	regulator_desc_buck(9),
 };
 
+#ifdef CONFIG_OF
+static int max77686_pmic_dt_parse_pdata(struct max77686_dev *iodev,
+					struct max77686_platform_data *pdata)
+{
+	struct device_node *pmic_np, *regulators_np;
+	struct max77686_regulator_data *rdata;
+	struct of_regulator_match rmatch;
+	unsigned int i;
+
+	pmic_np = iodev->dev->of_node;
+	regulators_np = of_find_node_by_name(pmic_np, "voltage-regulators");
+	if (!regulators_np) {
+		dev_err(iodev->dev, "could not find regulators sub-node\n");
+		return -EINVAL;
+	}
+
+	pdata->num_regulators = ARRAY_SIZE(regulators);
+	rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) *
+			     pdata->num_regulators, GFP_KERNEL);
+	if (!rdata) {
+		dev_err(iodev->dev,
+			"could not allocate memory for regulator data\n");
+		return -ENOMEM;
+	}
+
+	for (i = 0; i < pdata->num_regulators; i++) {
+		rmatch.name = regulators[i].name;
+		rmatch.init_data = NULL;
+		of_regulator_match(iodev->dev, regulators_np, &rmatch, 1);
+		rdata[i].initdata = rmatch.init_data;
+	}
+
+	pdata->regulators = rdata;
+
+	return 0;
+}
+#else
+static int max77686_pmic_dt_parse_pdata(struct max77686_dev *iodev,
+					struct max77686_platform_data *pdata)
+{
+	return 0;
+}
+#endif /* CONFIG_OF */
+
 static __devinit int max77686_pmic_probe(struct platform_device *pdev)
 {
 	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
@@ -245,7 +290,18 @@ static __devinit int max77686_pmic_probe(struct platform_device *pdev)
 
 	dev_dbg(&pdev->dev, "%s\n", __func__);
 
-	if (!pdata || pdata->num_regulators != MAX77686_REGULATORS) {
+	if (!pdata) {
+		dev_err(&pdev->dev, "no platform data found for regulator\n");
+		return -ENODEV;
+	}
+
+	if (iodev->dev->of_node) {
+		ret = max77686_pmic_dt_parse_pdata(iodev, pdata);
+		if (ret)
+			return ret;
+	}
+
+	if (pdata->num_regulators != MAX77686_REGULATORS) {
 		dev_err(&pdev->dev,
 			"Invalid initial data for regulator's initialiation\n");
 		return -EINVAL;