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linux/drivers/regulator/88pm886-regulator.c
Karel Balej 5d1a514439 regulator: Add regulators driver for Marvell 88PM886 PMIC 
Support the LDO and buck regulators of the Marvell 88PM886 PMIC.

Signed-off-by: Karel Balej <balejk@matfyz.cz>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240531175109.15599-4-balejk@matfyz.cz
Signed-off-by: Lee Jones <lee@kernel.org>
2024-06-28 15:41:11 +01:00

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// SPDX-License-Identifier: GPL-2.0-only
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/mfd/88pm886.h>
static const struct regmap_config pm886_regulator_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = PM886_REG_BUCK5_VOUT,
};
static const struct regulator_ops pm886_ldo_ops = {
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_iterate,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static const struct regulator_ops pm886_buck_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static const unsigned int pm886_ldo_volt_table1[] = {
1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000,
};
static const unsigned int pm886_ldo_volt_table2[] = {
1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000,
2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000,
};
static const unsigned int pm886_ldo_volt_table3[] = {
1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000,
};
static const struct linear_range pm886_buck_volt_ranges1[] = {
REGULATOR_LINEAR_RANGE(600000, 0, 79, 12500),
REGULATOR_LINEAR_RANGE(1600000, 80, 84, 50000),
};
static const struct linear_range pm886_buck_volt_ranges2[] = {
REGULATOR_LINEAR_RANGE(600000, 0, 79, 12500),
REGULATOR_LINEAR_RANGE(1600000, 80, 114, 50000),
};
static struct regulator_desc pm886_regulators[] = {
{
.name = "LDO1",
.regulators_node = "regulators",
.of_match = "ldo1",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(0),
.volt_table = pm886_ldo_volt_table1,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table1),
.vsel_reg = PM886_REG_LDO1_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO2",
.regulators_node = "regulators",
.of_match = "ldo2",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(1),
.volt_table = pm886_ldo_volt_table1,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table1),
.vsel_reg = PM886_REG_LDO2_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO3",
.regulators_node = "regulators",
.of_match = "ldo3",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(2),
.volt_table = pm886_ldo_volt_table1,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table1),
.vsel_reg = PM886_REG_LDO3_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO4",
.regulators_node = "regulators",
.of_match = "ldo4",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(3),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO4_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO5",
.regulators_node = "regulators",
.of_match = "ldo5",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(4),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO5_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO6",
.regulators_node = "regulators",
.of_match = "ldo6",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(5),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO6_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO7",
.regulators_node = "regulators",
.of_match = "ldo7",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(6),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO7_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO8",
.regulators_node = "regulators",
.of_match = "ldo8",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN1,
.enable_mask = BIT(7),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO8_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO9",
.regulators_node = "regulators",
.of_match = "ldo9",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(0),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO9_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO10",
.regulators_node = "regulators",
.of_match = "ldo10",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(1),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO10_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO11",
.regulators_node = "regulators",
.of_match = "ldo11",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(2),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO11_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO12",
.regulators_node = "regulators",
.of_match = "ldo12",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(3),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO12_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO13",
.regulators_node = "regulators",
.of_match = "ldo13",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(4),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO13_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO14",
.regulators_node = "regulators",
.of_match = "ldo14",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(5),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO14_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO15",
.regulators_node = "regulators",
.of_match = "ldo15",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(6),
.volt_table = pm886_ldo_volt_table2,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table2),
.vsel_reg = PM886_REG_LDO15_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "LDO16",
.regulators_node = "regulators",
.of_match = "ldo16",
.ops = &pm886_ldo_ops,
.type = REGULATOR_VOLTAGE,
.enable_reg = PM886_REG_LDO_EN2,
.enable_mask = BIT(7),
.volt_table = pm886_ldo_volt_table3,
.n_voltages = ARRAY_SIZE(pm886_ldo_volt_table3),
.vsel_reg = PM886_REG_LDO16_VOUT,
.vsel_mask = PM886_LDO_VSEL_MASK,
},
{
.name = "buck1",
.regulators_node = "regulators",
.of_match = "buck1",
.ops = &pm886_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 85,
.linear_ranges = pm886_buck_volt_ranges1,
.n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges1),
.vsel_reg = PM886_REG_BUCK1_VOUT,
.vsel_mask = PM886_BUCK_VSEL_MASK,
.enable_reg = PM886_REG_BUCK_EN,
.enable_mask = BIT(0),
},
{
.name = "buck2",
.regulators_node = "regulators",
.of_match = "buck2",
.ops = &pm886_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 115,
.linear_ranges = pm886_buck_volt_ranges2,
.n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2),
.vsel_reg = PM886_REG_BUCK2_VOUT,
.vsel_mask = PM886_BUCK_VSEL_MASK,
.enable_reg = PM886_REG_BUCK_EN,
.enable_mask = BIT(1),
},
{
.name = "buck3",
.regulators_node = "regulators",
.of_match = "buck3",
.ops = &pm886_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 115,
.linear_ranges = pm886_buck_volt_ranges2,
.n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2),
.vsel_reg = PM886_REG_BUCK3_VOUT,
.vsel_mask = PM886_BUCK_VSEL_MASK,
.enable_reg = PM886_REG_BUCK_EN,
.enable_mask = BIT(2),
},
{
.name = "buck4",
.regulators_node = "regulators",
.of_match = "buck4",
.ops = &pm886_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 115,
.linear_ranges = pm886_buck_volt_ranges2,
.n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2),
.vsel_reg = PM886_REG_BUCK4_VOUT,
.vsel_mask = PM886_BUCK_VSEL_MASK,
.enable_reg = PM886_REG_BUCK_EN,
.enable_mask = BIT(3),
},
{
.name = "buck5",
.regulators_node = "regulators",
.of_match = "buck5",
.ops = &pm886_buck_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 115,
.linear_ranges = pm886_buck_volt_ranges2,
.n_linear_ranges = ARRAY_SIZE(pm886_buck_volt_ranges2),
.vsel_reg = PM886_REG_BUCK5_VOUT,
.vsel_mask = PM886_BUCK_VSEL_MASK,
.enable_reg = PM886_REG_BUCK_EN,
.enable_mask = BIT(4),
},
};
static int pm886_regulator_probe(struct platform_device *pdev)
{
struct pm886_chip *chip = dev_get_drvdata(pdev->dev.parent);
struct regulator_config rcfg = { };
struct device *dev = &pdev->dev;
struct regulator_desc *rdesc;
struct regulator_dev *rdev;
struct i2c_client *page;
struct regmap *regmap;
page = devm_i2c_new_dummy_device(dev, chip->client->adapter,
chip->client->addr + PM886_PAGE_OFFSET_REGULATORS);
if (IS_ERR(page))
return dev_err_probe(dev, PTR_ERR(page),
"Failed to initialize regulators client\n");
regmap = devm_regmap_init_i2c(page, &pm886_regulator_regmap_config);
if (IS_ERR(regmap))
return dev_err_probe(dev, PTR_ERR(regmap),
"Failed to initialize regulators regmap\n");
rcfg.regmap = regmap;
rcfg.dev = dev->parent;
for (int i = 0; i < ARRAY_SIZE(pm886_regulators); i++) {
rdesc = &pm886_regulators[i];
rdev = devm_regulator_register(dev, rdesc, &rcfg);
if (IS_ERR(rdev))
return dev_err_probe(dev, PTR_ERR(rdev),
"Failed to register %s\n", rdesc->name);
}
return 0;
}
static const struct platform_device_id pm886_regulator_id_table[] = {
{ "88pm886-regulator", },
{ }
};
MODULE_DEVICE_TABLE(platform, pm886_regulator_id_table);
static struct platform_driver pm886_regulator_driver = {
.driver = {
.name = "88pm886-regulator",
},
.probe = pm886_regulator_probe,
.id_table = pm886_regulator_id_table,
};
module_platform_driver(pm886_regulator_driver);
MODULE_DESCRIPTION("Marvell 88PM886 PMIC regulator driver");
MODULE_AUTHOR("Karel Balej <balejk@matfyz.cz>");
MODULE_LICENSE("GPL");
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