regulator: da9210: add Device Tree support

This patch adds basic Device Tree support to the da9210 regulator driver -
with no special properties, since also driver's platform data only contains
standard regulator initialisation parameters.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

2 files changed, 27 insertions, 3 deletions

diff --git a/Documentation/devicetree/bindings/regulator/da9210.txt b/Documentation/devicetree/bindings/regulator/da9210.txt
new file mode 100644
index 000000000000..f120f229d67d
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/da9210.txt
@@ -0,0 +1,21 @@
+* Dialog Semiconductor DA9210 Voltage Regulator
+
+Required properties:
+
+- compatible:   must be "diasemi,da9210"
+- reg:          the i2c slave address of the regulator. It should be 0x68.
+
+Any standard regulator properties can be used to configure the single da9210
+DCDC.
+
+Example:
+
+        da9210@68 {
+                compatible = "diasemi,da9210";
+                reg = <0x68>;
+
+                regulator-min-microvolt = <900000>;
+                regulator-max-microvolt = <1000000>;
+                regulator-boot-on;
+                regulator-always-on;
+        };
diff --git a/drivers/regulator/da9210-regulator.c b/drivers/regulator/da9210-regulator.c
index f0fe54b38977..f7ccff14f763 100644
--- a/drivers/regulator/da9210-regulator.c
+++ b/drivers/regulator/da9210-regulator.c
@@ -25,6 +25,7 @@
 #include <linux/slab.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
 #include <linux/regmap.h>
 
 #include "da9210-regulator.h"
@@ -126,7 +127,8 @@ static int da9210_i2c_probe(struct i2c_client *i2c,
                             const struct i2c_device_id *id)
 {
         struct da9210 *chip;
-        struct da9210_pdata *pdata = i2c->dev.platform_data;
+        struct device *dev = &i2c->dev;
+        struct da9210_pdata *pdata = dev_get_platdata(dev);
         struct regulator_dev *rdev = NULL;
         struct regulator_config config = { };
         int error;
@@ -147,10 +149,11 @@ static int da9210_i2c_probe(struct i2c_client *i2c,
         }
 
         config.dev = &i2c->dev;
-        if (pdata)
-                config.init_data = &pdata->da9210_constraints;
+        config.init_data = pdata ? &pdata->da9210_constraints :
+                of_get_regulator_init_data(dev, dev->of_node);
         config.driver_data = chip;
         config.regmap = chip->regmap;
+        config.of_node = dev->of_node;
 
         rdev = regulator_register(&da9210_reg, &config);
         if (IS_ERR(rdev)) {