mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
186 lines
4.9 KiB
C
186 lines
4.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
#include <linux/module.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/regulator/driver.h>
|
|
|
|
enum fan53880_regulator_ids {
|
|
FAN53880_LDO1,
|
|
FAN53880_LDO2,
|
|
FAN53880_LDO3,
|
|
FAN53880_LDO4,
|
|
FAN53880_BUCK,
|
|
FAN53880_BOOST,
|
|
};
|
|
|
|
enum fan53880_registers {
|
|
FAN53880_PRODUCT_ID = 0x00,
|
|
FAN53880_SILICON_REV,
|
|
FAN53880_BUCKVOUT,
|
|
FAN53880_BOOSTVOUT,
|
|
FAN53880_LDO1VOUT,
|
|
FAN53880_LDO2VOUT,
|
|
FAN53880_LDO3VOUT,
|
|
FAN53880_LDO4VOUT,
|
|
FAN53880_IOUT,
|
|
FAN53880_ENABLE,
|
|
FAN53880_ENABLE_BOOST,
|
|
};
|
|
|
|
#define FAN53880_ID 0x01
|
|
|
|
static const struct regulator_ops fan53880_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,
|
|
};
|
|
|
|
#define FAN53880_LDO(_num, _supply, _default) \
|
|
[FAN53880_LDO ## _num] = { \
|
|
.name = "LDO"#_num, \
|
|
.of_match = of_match_ptr("LDO"#_num), \
|
|
.regulators_node = of_match_ptr("regulators"), \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.linear_ranges = (struct linear_range[]) { \
|
|
REGULATOR_LINEAR_RANGE(_default, 0x0, 0x0, 0), \
|
|
REGULATOR_LINEAR_RANGE(800000, 0xf, 0x73, 25000), \
|
|
}, \
|
|
.n_linear_ranges = 2, \
|
|
.n_voltages = 0x74, \
|
|
.vsel_reg = FAN53880_LDO ## _num ## VOUT, \
|
|
.vsel_mask = 0x7f, \
|
|
.enable_reg = FAN53880_ENABLE, \
|
|
.enable_mask = BIT(_num - 1), \
|
|
.enable_time = 150, \
|
|
.supply_name = _supply, \
|
|
.ops = &fan53880_ops, \
|
|
}
|
|
|
|
static const struct regulator_desc fan53880_regulators[] = {
|
|
FAN53880_LDO(1, "VIN12", 2800000),
|
|
FAN53880_LDO(2, "VIN12", 2800000),
|
|
FAN53880_LDO(3, "VIN3", 1800000),
|
|
FAN53880_LDO(4, "VIN4", 1800000),
|
|
[FAN53880_BUCK] = {
|
|
.name = "BUCK",
|
|
.of_match = of_match_ptr("BUCK"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.linear_ranges = (struct linear_range[]) {
|
|
REGULATOR_LINEAR_RANGE(1100000, 0x0, 0x0, 0),
|
|
REGULATOR_LINEAR_RANGE(600000, 0x1f, 0xf7, 12500),
|
|
},
|
|
.n_linear_ranges = 2,
|
|
.n_voltages = 0xf8,
|
|
.vsel_reg = FAN53880_BUCKVOUT,
|
|
.vsel_mask = 0xff,
|
|
.enable_reg = FAN53880_ENABLE,
|
|
.enable_mask = 0x10,
|
|
.enable_time = 480,
|
|
.supply_name = "PVIN",
|
|
.ops = &fan53880_ops,
|
|
},
|
|
[FAN53880_BOOST] = {
|
|
.name = "BOOST",
|
|
.of_match = of_match_ptr("BOOST"),
|
|
.regulators_node = of_match_ptr("regulators"),
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.linear_ranges = (struct linear_range[]) {
|
|
REGULATOR_LINEAR_RANGE(5000000, 0x0, 0x0, 0),
|
|
REGULATOR_LINEAR_RANGE(3000000, 0x4, 0x70, 25000),
|
|
},
|
|
.n_linear_ranges = 2,
|
|
.n_voltages = 0x71,
|
|
.vsel_reg = FAN53880_BOOSTVOUT,
|
|
.vsel_mask = 0x7f,
|
|
.enable_reg = FAN53880_ENABLE_BOOST,
|
|
.enable_mask = 0xff,
|
|
.enable_time = 580,
|
|
.supply_name = "PVIN",
|
|
.ops = &fan53880_ops,
|
|
},
|
|
};
|
|
|
|
static const struct regmap_config fan53880_regmap = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.max_register = FAN53880_ENABLE_BOOST,
|
|
};
|
|
|
|
static int fan53880_i2c_probe(struct i2c_client *i2c)
|
|
{
|
|
struct regulator_config config = { };
|
|
struct regulator_dev *rdev;
|
|
struct regmap *regmap;
|
|
int i, ret;
|
|
unsigned int data;
|
|
|
|
regmap = devm_regmap_init_i2c(i2c, &fan53880_regmap);
|
|
if (IS_ERR(regmap)) {
|
|
ret = PTR_ERR(regmap);
|
|
dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regmap_read(regmap, FAN53880_PRODUCT_ID, &data);
|
|
if (ret < 0) {
|
|
dev_err(&i2c->dev, "Failed to read PRODUCT_ID: %d\n", ret);
|
|
return ret;
|
|
}
|
|
if (data != FAN53880_ID) {
|
|
dev_err(&i2c->dev, "Unsupported device id: 0x%x.\n", data);
|
|
return -ENODEV;
|
|
}
|
|
|
|
config.dev = &i2c->dev;
|
|
config.init_data = NULL;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(fan53880_regulators); i++) {
|
|
rdev = devm_regulator_register(&i2c->dev,
|
|
&fan53880_regulators[i],
|
|
&config);
|
|
if (IS_ERR(rdev)) {
|
|
ret = PTR_ERR(rdev);
|
|
dev_err(&i2c->dev, "Failed to register %s: %d\n",
|
|
fan53880_regulators[i].name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id fan53880_dt_ids[] = {
|
|
{ .compatible = "onnn,fan53880", },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, fan53880_dt_ids);
|
|
#endif
|
|
|
|
static const struct i2c_device_id fan53880_i2c_id[] = {
|
|
{ "fan53880", },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, fan53880_i2c_id);
|
|
|
|
static struct i2c_driver fan53880_regulator_driver = {
|
|
.driver = {
|
|
.name = "fan53880",
|
|
.of_match_table = of_match_ptr(fan53880_dt_ids),
|
|
},
|
|
.probe_new = fan53880_i2c_probe,
|
|
.id_table = fan53880_i2c_id,
|
|
};
|
|
module_i2c_driver(fan53880_regulator_driver);
|
|
|
|
MODULE_DESCRIPTION("FAN53880 PMIC voltage regulator driver");
|
|
MODULE_AUTHOR("Christoph Fritz <chf.fritz@googlemail.com>");
|
|
MODULE_LICENSE("GPL");
|