Commit b1917578 authored by Beomho Seo's avatar Beomho Seo Committed by Mark Brown
Browse files

regulator: rt5033: Add RT5033 Regulator device driver 



This patch add device driver of Richtek RT5033 PMIC.
The driver support multiple regulator like LDO and synchronous Buck.
The integrated synchronous buck converter is designed to provide 0.6 A
application with high efficiency. Two LDOs are integrated. One safe LDO is
for 60mA and the other one LDO is for 150 mA.

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: default avatarBeomho Seo <beomho.seo@samsung.com>
Acked-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f114040e

drivers/regulator/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -521,6 +521,14 @@ config REGULATOR_RN5T618 
	help

	  Say y here to support the regulators found on Ricoh RN5T618 PMIC.



config REGULATOR_RT5033

	tristate "Richtek RT5033 Regulators"

	depends on MFD_RT5033

	help

	  This adds support for voltage and current regulators in Richtek

	  RT5033 PMIC. The device supports multiple regulators like

	  current source, LDO and Buck.



config REGULATOR_S2MPA01

	tristate "Samsung S2MPA01 voltage regulator"

	depends on MFD_SEC_CORE

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o 
obj-$(CONFIG_REGULATOR_RC5T583)  += rc5t583-regulator.o

obj-$(CONFIG_REGULATOR_RK808)   += rk808-regulator.o

obj-$(CONFIG_REGULATOR_RN5T618) += rn5t618-regulator.o

obj-$(CONFIG_REGULATOR_RT5033)	+= rt5033-regulator.o

obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o

obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o

obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o

drivers/regulator/rt5033-regulator.c

0 → 100644
+123 −0
Original line number Diff line number Diff line 
/*

 * Regulator driver for the Richtek RT5033

 *

 * Copyright (C) 2014 Samsung Electronics, Co., Ltd.

 * Author: Beomho Seo <beomho.seo@samsung.com>

 *

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

 * it under the terms of the GNU General Public License version 2 as

 * published bythe Free Software Foundation.

 */



#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/regulator/driver.h>

#include <linux/mfd/rt5033.h>

#include <linux/mfd/rt5033-private.h>

#include <linux/regulator/of_regulator.h>



static struct regulator_ops rt5033_safe_ldo_ops = {

	.is_enabled		= regulator_is_enabled_regmap,

	.enable			= regulator_enable_regmap,

	.disable		= regulator_disable_regmap,

	.list_voltage		= regulator_list_voltage_linear,

};



static struct regulator_ops rt5033_buck_ops = {

	.is_enabled		= regulator_is_enabled_regmap,

	.enable			= regulator_enable_regmap,

	.disable		= regulator_disable_regmap,

	.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 rt5033_supported_regulators[] = {

	[RT5033_BUCK] = {

		.name		= "BUCK",

		.id		= RT5033_BUCK,

		.ops		= &rt5033_buck_ops,

		.type		= REGULATOR_VOLTAGE,

		.owner		= THIS_MODULE,

		.n_voltages	= RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM,

		.min_uV		= RT5033_REGULATOR_BUCK_VOLTAGE_MIN,

		.uV_step	= RT5033_REGULATOR_BUCK_VOLTAGE_STEP,

		.enable_reg	= RT5033_REG_CTRL,

		.enable_mask	= RT5033_CTRL_EN_BUCK_MASK,

		.vsel_reg	= RT5033_REG_BUCK_CTRL,

		.vsel_mask	= RT5033_BUCK_CTRL_MASK,

	},

	[RT5033_LDO] = {

		.name		= "LDO",

		.id		= RT5033_LDO,

		.ops		= &rt5033_buck_ops,

		.type		= REGULATOR_VOLTAGE,

		.owner		= THIS_MODULE,

		.n_voltages	= RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM,

		.min_uV		= RT5033_REGULATOR_LDO_VOLTAGE_MIN,

		.uV_step	= RT5033_REGULATOR_LDO_VOLTAGE_STEP,

		.enable_reg	= RT5033_REG_CTRL,

		.enable_mask	= RT5033_CTRL_EN_LDO_MASK,

		.vsel_reg	= RT5033_REG_LDO_CTRL,

		.vsel_mask	= RT5033_LDO_CTRL_MASK,

	},

	[RT5033_SAFE_LDO] = {

		.name		= "SAFE_LDO",

		.id		= RT5033_SAFE_LDO,

		.ops		= &rt5033_safe_ldo_ops,

		.type		= REGULATOR_VOLTAGE,

		.owner		= THIS_MODULE,

		.n_voltages	= 1,

		.min_uV		= RT5033_REGULATOR_SAFE_LDO_VOLTAGE,

		.enable_reg	= RT5033_REG_CTRL,

		.enable_mask	= RT5033_CTRL_EN_SAFE_LDO_MASK,

	},

};



static int rt5033_regulator_probe(struct platform_device *pdev)

{

	struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent);

	int ret, i;

	struct regulator_config config = {};



	config.dev = &pdev->dev;

	config.driver_data = rt5033;



	for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) {

		struct regulator_dev *regulator;



		config.regmap = rt5033->regmap;



		regulator = devm_regulator_register(&pdev->dev,

				&rt5033_supported_regulators[i], &config);

		if (IS_ERR(regulator)) {

			ret = PTR_ERR(regulator);

			dev_err(&pdev->dev,

				"Regulator init failed %d: with error: %d\n",

				i, ret);

			return ret;

		}

	}



	return 0;

}



static const struct platform_device_id rt5033_regulator_id[] = {

	{ "rt5033-regulator", },

	{ }

};

MODULE_DEVICE_TABLE(platform, rt5033_regulator_id);



static struct platform_driver rt5033_regulator_driver = {

	.driver = {

		.name = "rt5033-regulator",

	},

	.probe		= rt5033_regulator_probe,

	.id_table	= rt5033_regulator_id,

};

module_platform_driver(rt5033_regulator_driver);



MODULE_DESCRIPTION("Richtek RT5033 Regulator driver");

MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");

MODULE_LICENSE("GPL");