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regulator: sm5703-regulator: Add regulators support for SM5703 MFD
Regulators block of SM5703 controls several voltage regulators which are used to power various components. There are 3 LDO outputs ranging from 1.5 to 3.3V, a buck regulator ranging from 1V to 3V, two fixed voltage LDO regulators for powering the USB devices and one high-power fixed voltage LDO line (actually two lines) meant to power high-power USB devices. Signed-off-by: Markuss Broks <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]>
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‎drivers/regulator/Kconfig

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@@ -1167,6 +1167,13 @@ config REGULATOR_SLG51000
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The SLG51000 is seven compact and customizable low dropout
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regulators.
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config REGULATOR_SM5703
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tristate "Silicon Mitus SM5703 regulators"
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depends on MFD_SM5703
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help
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This driver provides support for voltage regulators of SM5703
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multi-function device.
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config REGULATOR_STM32_BOOSTER
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tristate "STMicroelectronics STM32 BOOSTER"
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depends on ARCH_STM32 || COMPILE_TEST

‎drivers/regulator/Makefile

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@@ -139,6 +139,7 @@ obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
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obj-$(CONFIG_REGULATOR_SC2731) += sc2731-regulator.o
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obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o
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obj-$(CONFIG_REGULATOR_SLG51000) += slg51000-regulator.o
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obj-$(CONFIG_REGULATOR_SM5703) += sm5703-regulator.o
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obj-$(CONFIG_REGULATOR_STM32_BOOSTER) += stm32-booster.o
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obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
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obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o

‎drivers/regulator/sm5703-regulator.c

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// SPDX-License-Identifier: GPL-2.0-only
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#include <linux/mfd/sm5703.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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enum sm5703_regulators {
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SM5703_BUCK,
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SM5703_LDO1,
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SM5703_LDO2,
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SM5703_LDO3,
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SM5703_USBLDO1,
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SM5703_USBLDO2,
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SM5703_VBUS,
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SM5703_MAX_REGULATORS,
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};
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static const int sm5703_ldo_voltagemap[] = {
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1500000, 1800000, 2600000, 2800000, 3000000, 3300000,
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};
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static const int sm5703_buck_voltagemap[] = {
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1000000, 1000000, 1000000, 1000000,
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1000000, 1000000, 1000000, 1000000,
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1000000, 1000000, 1000000, 1100000,
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1200000, 1300000, 1400000, 1500000,
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1600000, 1700000, 1800000, 1900000,
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2000000, 2100000, 2200000, 2300000,
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2400000, 2500000, 2600000, 2700000,
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2800000, 2900000, 3000000, 3000000,
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};
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#define SM5703USBLDO(_name, _id) \
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[SM5703_USBLDO ## _id] = { \
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.name = _name, \
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.of_match = _name, \
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.regulators_node = "regulators", \
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.type = REGULATOR_VOLTAGE, \
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.id = SM5703_USBLDO ## _id, \
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.ops = &sm5703_regulator_ops_fixed, \
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.fixed_uV = SM5703_USBLDO_MICROVOLT, \
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.enable_reg = SM5703_REG_USBLDO12, \
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.enable_mask = SM5703_REG_EN_USBLDO ##_id, \
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.owner = THIS_MODULE, \
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}
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#define SM5703VBUS(_name) \
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[SM5703_VBUS] = { \
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.name = _name, \
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.of_match = _name, \
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.regulators_node = "regulators", \
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.type = REGULATOR_VOLTAGE, \
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.id = SM5703_VBUS, \
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.ops = &sm5703_regulator_ops_fixed, \
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.fixed_uV = SM5703_VBUS_MICROVOLT, \
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.enable_reg = SM5703_REG_CNTL, \
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.enable_mask = SM5703_OPERATION_MODE_MASK, \
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.enable_val = SM5703_OPERATION_MODE_USB_OTG_MODE, \
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.disable_val = SM5703_OPERATION_MODE_CHARGING_ON, \
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.owner = THIS_MODULE, \
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}
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#define SM5703BUCK(_name) \
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[SM5703_BUCK] = { \
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.name = _name, \
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.of_match = _name, \
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.regulators_node = "regulators", \
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.type = REGULATOR_VOLTAGE, \
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.id = SM5703_BUCK, \
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.ops = &sm5703_regulator_ops, \
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.n_voltages = ARRAY_SIZE(sm5703_buck_voltagemap), \
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.volt_table = sm5703_buck_voltagemap, \
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.vsel_reg = SM5703_REG_BUCK, \
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.vsel_mask = SM5703_BUCK_VOLT_MASK, \
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.enable_reg = SM5703_REG_BUCK, \
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.enable_mask = SM5703_REG_EN_BUCK, \
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.owner = THIS_MODULE, \
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}
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#define SM5703LDO(_name, _id) \
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[SM5703_LDO ## _id] = { \
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.name = _name, \
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.of_match = _name, \
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.regulators_node = "regulators", \
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.type = REGULATOR_VOLTAGE, \
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.id = SM5703_LDO ## _id, \
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.ops = &sm5703_regulator_ops, \
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.n_voltages = ARRAY_SIZE(sm5703_ldo_voltagemap), \
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.volt_table = sm5703_ldo_voltagemap, \
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.vsel_reg = SM5703_REG_LDO ##_id, \
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.vsel_mask = SM5703_LDO_VOLT_MASK, \
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.enable_reg = SM5703_REG_LDO ##_id, \
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.enable_mask = SM5703_LDO_EN, \
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.owner = THIS_MODULE, \
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}
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static const struct regulator_ops sm5703_regulator_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.list_voltage = regulator_list_voltage_table,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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};
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static const struct regulator_ops sm5703_regulator_ops_fixed = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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};
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static struct regulator_desc sm5703_regulators_desc[SM5703_MAX_REGULATORS] = {
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SM5703BUCK("buck"),
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SM5703LDO("ldo1", 1),
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SM5703LDO("ldo2", 2),
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SM5703LDO("ldo3", 3),
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SM5703USBLDO("usbldo1", 1),
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SM5703USBLDO("usbldo2", 2),
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SM5703VBUS("vbus"),
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};
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static int sm5703_regulator_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct regulator_config config = { NULL, };
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struct regulator_dev *rdev;
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struct sm5703_dev *sm5703 = dev_get_drvdata(pdev->dev.parent);
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int i;
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config.dev = dev->parent;
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config.regmap = sm5703->regmap;
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for (i = 0; i < SM5703_MAX_REGULATORS; i++) {
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rdev = devm_regulator_register(dev,
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&sm5703_regulators_desc[i],
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&config);
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if (IS_ERR(rdev))
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return dev_err_probe(dev, PTR_ERR(rdev),
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"Failed to register a regulator\n");
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}
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return 0;
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}
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static const struct platform_device_id sm5703_regulator_id[] = {
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{ "sm5703-regulator", 0 },
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{}
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};
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MODULE_DEVICE_TABLE(platform, sm5703_regulator_id);
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static struct platform_driver sm5703_regulator_driver = {
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.driver = {
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.name = "sm5703-regulator",
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},
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.probe = sm5703_regulator_probe,
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.id_table = sm5703_regulator_id,
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};
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module_platform_driver(sm5703_regulator_driver);
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MODULE_DESCRIPTION("Silicon Mitus SM5703 LDO/Buck/USB regulator driver");
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MODULE_AUTHOR("Markuss Broks <[email protected]>");
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MODULE_LICENSE("GPL");

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