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