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