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Message-id: <1415328727-16245-3-git-send-email-beomho.seo@samsung.com>
Date: Fri, 07 Nov 2014 11:52:04 +0900
From: Beomho Seo <beomho.seo@...sung.com>
To: linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org
Cc: sameo@...ux.intel.com, lee.jones@...aro.org, lgirdwood@...il.com,
broonie@...nel.org, sre@...nel.org, dbaryshkov@...il.com,
dwmw2@...radead.org, robh+dt@...nel.org, pawel.moll@....com,
mark.rutland@....com, ijc+devicetree@...lion.org.uk,
galak@...eaurora.org, kyungmin.park@...sung.com,
cw00.choi@...sung.com, jonghwa3.lee@...sung.com,
geunsik.lim@...sung.com, inki.dae@...sung.com,
sw0312.kim@...sung.com, Beomho Seo <beomho.seo@...sung.com>
Subject: [PATCH 2/5] 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@...il.com>
Cc: Mark Brown <broonie@...nel.org>
Signed-off-by: Beomho Seo <beomho.seo@...sung.com>
Acked-by: Chanwoo Choi <cw00.choi@...sung.com>
---
drivers/regulator/Kconfig | 8 ++
drivers/regulator/Makefile | 1 +
drivers/regulator/rt5033-regulator.c | 154 ++++++++++++++++++++++++++++++++++
3 files changed, 163 insertions(+)
create mode 100644 drivers/regulator/rt5033-regulator.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 55d7b7b..8558e1b 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -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
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 1029ed3..1f28ebf 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -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
diff --git a/drivers/regulator/rt5033-regulator.c b/drivers/regulator/rt5033-regulator.c
new file mode 100644
index 0000000..87571d8
--- /dev/null
+++ b/drivers/regulator/rt5033-regulator.c
@@ -0,0 +1,154 @@
+/*
+ * Regulator driver for the Richtek RT5033
+ *
+ * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
+ * Beomho Seo <beomho.seo@...sung.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 struct of_regulator_match rt5033_regulator_matches[] = {
+ { .name = "BUCK", },
+ { .name = "LDO", },
+ { .name = "SAFE_LDO", },
+};
+
+static int rt5033_regulator_dt_parse_data(struct device *dev)
+{
+ int ret;
+ struct device_node *np;
+
+ np = of_get_child_by_name(dev->parent->of_node, "regulators");
+ if (!np) {
+ dev_err(dev, "Failed to get child node for regulators\n");
+ return -EINVAL;
+ }
+
+ ret = of_regulator_match(dev, np, rt5033_regulator_matches,
+ ARRAY_SIZE(rt5033_regulator_matches));
+ if (ret < 0)
+ return ret;
+
+ return ret;
+}
+
+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 = {};
+
+ ret = rt5033_regulator_dt_parse_data(&pdev->dev);
+ if (ret < 0)
+ return ret;
+
+ config.dev = &pdev->dev;
+ config.driver_data = rt5033;
+
+ for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) {
+ struct regulator_dev *regulator;
+
+ config.init_data = rt5033_regulator_matches[i].init_data;
+ config.of_node = rt5033_regulator_matches[i].of_node;
+ 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@...sung.com>");
+MODULE_LICENSE("GPL");
--
1.7.9.5
--
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