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Commit 58d114b6 authored by Ying-Chun Liu (PaulLiu)'s avatar Ying-Chun Liu (PaulLiu) Committed by Samuel Ortiz
Browse files

mfd: Add device-tree support for da9502 i2c driver 



This patch adds device-tree support for dialog MFD and the binding
documentations.

Signed-off-by: default avatarYing-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Ashish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 465c29d3

Documentation/devicetree/bindings/mfd/da9052-i2c.txt

0 → 100644
+60 −0
Original line number Diff line number Diff line 
* Dialog DA9052/53 Power Management Integrated Circuit (PMIC)



Required properties:

- compatible : Should be "dlg,da9052", "dlg,da9053-aa",

			 "dlg,da9053-ab", or "dlg,da9053-bb"



Sub-nodes:

- regulators : Contain the regulator nodes. The DA9052/53 regulators are

  bound using their names as listed below:



    buck0     : regulator BUCK0

    buck1     : regulator BUCK1

    buck2     : regulator BUCK2

    buck3     : regulator BUCK3

    ldo4      : regulator LDO4

    ldo5      : regulator LDO5

    ldo6      : regulator LDO6

    ldo7      : regulator LDO7

    ldo8      : regulator LDO8

    ldo9      : regulator LDO9

    ldo10     : regulator LDO10

    ldo11     : regulator LDO11

    ldo12     : regulator LDO12

    ldo13     : regulator LDO13



  The bindings details of individual regulator device can be found in:

  Documentation/devicetree/bindings/regulator/regulator.txt



Examples:



i2c@63fc8000 { /* I2C1 */

	status = "okay";



	pmic: dialog@48 {

		compatible = "dlg,da9053-aa";

		reg = <0x48>;



		regulators {

			buck0 {

				regulator-min-microvolt = <500000>;

				regulator-max-microvolt = <2075000>;

			};



			buck1 {

				regulator-min-microvolt = <500000>;

				regulator-max-microvolt = <2075000>;

			};



			buck2 {

				regulator-min-microvolt = <925000>;

				regulator-max-microvolt = <2500000>;

			};



			buck3 {

				regulator-min-microvolt = <925000>;

				regulator-max-microvolt = <2500000>;

			};

		};

	};

};

drivers/mfd/da9052-i2c.c

+42 −8
Original line number Diff line number Diff line
@@ -22,6 +22,11 @@ 
#include <linux/mfd/da9052/da9052.h>

#include <linux/mfd/da9052/reg.h>



#ifdef CONFIG_OF

#include <linux/of.h>

#include <linux/of_device.h>

#endif



static int da9052_i2c_enable_multiwrite(struct da9052 *da9052)

{

	int reg_val, ret;
@@ -41,6 +46,24 @@ static int da9052_i2c_enable_multiwrite(struct da9052 *da9052) 
	return 0;

}



static struct i2c_device_id da9052_i2c_id[] = {

	{"da9052", DA9052},

	{"da9053-aa", DA9053_AA},

	{"da9053-ba", DA9053_BA},

	{"da9053-bb", DA9053_BB},

	{}

};



#ifdef CONFIG_OF

static const struct of_device_id dialog_dt_ids[] = {

	{ .compatible = "dlg,da9052", .data = &da9052_i2c_id[0] },

	{ .compatible = "dlg,da9053-aa", .data = &da9052_i2c_id[1] },

	{ .compatible = "dlg,da9053-ab", .data = &da9052_i2c_id[2] },

	{ .compatible = "dlg,da9053-bb", .data = &da9052_i2c_id[3] },

	{ /* sentinel */ }

};

#endif



static int __devinit da9052_i2c_probe(struct i2c_client *client,

				       const struct i2c_device_id *id)

{
@@ -76,6 +99,22 @@ static int __devinit da9052_i2c_probe(struct i2c_client *client, 
	if (ret < 0)

		goto err_regmap;



#ifdef CONFIG_OF

	if (!id) {

		struct device_node *np = client->dev.of_node;

		const struct of_device_id *deviceid;



		deviceid = of_match_node(np, dialog_dt_ids);

		id = (const struct i2c_device_id *)deviceid->data;

	}

#endif



	if (!id) {

		ret = -ENODEV;

		dev_err(&client->dev, "id is null.\n");

		goto err_regmap;

	}



	ret = da9052_device_init(da9052, id->driver_data);

	if (ret != 0)

		goto err_regmap;
@@ -100,14 +139,6 @@ static int __devexit da9052_i2c_remove(struct i2c_client *client) 
	return 0;

}



static struct i2c_device_id da9052_i2c_id[] = {

	{"da9052", DA9052},

	{"da9053-aa", DA9053_AA},

	{"da9053-ba", DA9053_BA},

	{"da9053-bb", DA9053_BB},

	{}

};



static struct i2c_driver da9052_i2c_driver = {

	.probe = da9052_i2c_probe,

	.remove = __devexit_p(da9052_i2c_remove),
@@ -115,6 +146,9 @@ static struct i2c_driver da9052_i2c_driver = { 
	.driver = {

		.name = "da9052",

		.owner = THIS_MODULE,

#ifdef CONFIG_OF

		.of_match_table = dialog_dt_ids,

#endif

	},

};