linux-kernel - [PATCH v2 2/2] regulator: da9210: add Device Tree support

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Message-Id: <1378988915-10539-3-git-send-email-g.liakhovetski@gmx.de>
Date:	Thu, 12 Sep 2013 14:28:35 +0200
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	linux-kernel@...r.kernel.org
Cc:	Magnus Damm <magnus.damm@...il.com>, linux-sh@...r.kernel.org,
	Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>
Subject: [PATCH v2 2/2] 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@...il.com>
---

v2: add DT documentation

 .../devicetree/bindings/regulator/da9210.txt       |   21 ++++++++++++++++++++
 drivers/regulator/da9210-regulator.c               |    9 +++++--
 2 files changed, 27 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/regulator/da9210.txt

diff --git a/Documentation/devicetree/bindings/regulator/da9210.txt b/Documentation/devicetree/bindings/regulator/da9210.txt
new file mode 100644
index 0000000..f120f22
--- /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 f0fe54b..f7ccff14 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)) {
-- 
1.7.2.5

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