regulator: Add driver for Arizona LDO1

obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500.o

obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o

obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o

obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o

obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o

obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o

obj-$(CONFIG_REGULATOR_DA9052)	+= da9052-regulator.o

obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o

/*

 * arizona-ldo1.c  --  LDO1 supply for Arizona devices

 *

 * Copyright 2012 Wolfson Microelectronics PLC.

 *

 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>

 *

 *  This program is free software; you can redistribute  it and/or modify it

 *  under  the terms of  the GNU General  Public License as published by the

 *  Free Software Foundation;  either version 2 of the  License, or (at your

 *  option) any later version.

 */

#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/init.h>

#include <linux/bitops.h>

#include <linux/err.h>

#include <linux/platform_device.h>

#include <linux/regulator/driver.h>

#include <linux/regulator/machine.h>

#include <linux/gpio.h>

#include <linux/slab.h>

#include <linux/mfd/arizona/core.h>

#include <linux/mfd/arizona/pdata.h>

#include <linux/mfd/arizona/registers.h>

struct arizona_ldo1 {

	struct regulator_dev *regulator;

	struct arizona *arizona;

	struct regulator_consumer_supply supply;

	struct regulator_init_data init_data;

};

static struct regulator_ops arizona_ldo1_ops = {

	.list_voltage = regulator_list_voltage_linear,

	.map_voltage = regulator_map_voltage_linear,

	.get_voltage_sel = regulator_get_voltage_sel_regmap,

	.set_voltage_sel = regulator_set_voltage_sel_regmap,

};

static const struct regulator_desc arizona_ldo1 = {

	.name = "LDO1",

	.supply_name = "LDOVDD",

	.type = REGULATOR_VOLTAGE,

	.ops = &arizona_ldo1_ops,

	.vsel_reg = ARIZONA_LDO1_CONTROL_1,

	.vsel_mask = ARIZONA_LDO1_VSEL_MASK,

	.min_uV = 900000,

	.uV_step = 50000,

	.n_voltages = 7,

	.owner = THIS_MODULE,

};

static const struct regulator_init_data arizona_ldo1_default = {

	.num_consumer_supplies = 1,

};

static __devinit int arizona_ldo1_probe(struct platform_device *pdev)

{

	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);

	struct regulator_config config = { };

	struct arizona_ldo1 *ldo1;

	int ret;

	ldo1 = devm_kzalloc(&pdev->dev, sizeof(*ldo1), GFP_KERNEL);

	if (ldo1 == NULL) {

		dev_err(&pdev->dev, "Unable to allocate private data\n");

		return -ENOMEM;

	}

	ldo1->arizona = arizona;

	/*

	 * Since the chip usually supplies itself we provide some

	 * default init_data for it.  This will be overridden with

	 * platform data if provided.

	 */

	ldo1->init_data = arizona_ldo1_default;

	ldo1->init_data.consumer_supplies = &ldo1->supply;

	ldo1->supply.supply = "DCVDD";

	ldo1->supply.dev_name = dev_name(arizona->dev);

	config.dev = arizona->dev;

	config.driver_data = ldo1;

	config.regmap = arizona->regmap;

	if (arizona->pdata.ldo1)

		config.init_data = arizona->pdata.ldo1;

	else

		config.init_data = &ldo1->init_data;

	ldo1->regulator = regulator_register(&arizona_ldo1, &config);

	if (IS_ERR(ldo1->regulator)) {

		ret = PTR_ERR(ldo1->regulator);

		dev_err(arizona->dev, "Failed to register LDO1 supply: %d\n",

			ret);

		return ret;

	}

	platform_set_drvdata(pdev, ldo1);

	return 0;

}

static __devexit int arizona_ldo1_remove(struct platform_device *pdev)

{

	struct arizona_ldo1 *ldo1 = platform_get_drvdata(pdev);

	regulator_unregister(ldo1->regulator);

	return 0;

}

static struct platform_driver arizona_ldo1_driver = {

	.probe = arizona_ldo1_probe,

	.remove = __devexit_p(arizona_ldo1_remove),

	.driver		= {

		.name	= "arizona-ldo1",

		.owner	= THIS_MODULE,

	},

};

module_platform_driver(arizona_ldo1_driver);

/* Module information */

MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");

MODULE_DESCRIPTION("Arizona LDO1 driver");

MODULE_LICENSE("GPL");

MODULE_ALIAS("platform:arizona-ldo1");