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regulator: rt5033: Add RT5033 Regulator device driver

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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: Beomho Seo <beomho.seo@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Beomho Seo 2014-11-12 21:07:59 +09:00 committed by Mark Brown
parent f114040e3e
commit b1917578fd
3 changed files with 132 additions and 0 deletions
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8
drivers/regulator/Kconfig
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@ -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

1
drivers/regulator/Makefile
View File

@ -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

123
drivers/regulator/rt5033-regulator.c Normal file
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@ -0,0 +1,123 @@
/*
* 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");