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135 lines
3.9 KiB
135 lines
3.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Regulator driver for the Richtek RT5033 |
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* |
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* Copyright (C) 2014 Samsung Electronics, Co., Ltd. |
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* Author: Beomho Seo <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/regulator/driver.h> |
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#include <linux/mfd/rt5033.h> |
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#include <linux/mfd/rt5033-private.h> |
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#include <linux/regulator/of_regulator.h> |
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static const struct linear_range rt5033_buck_ranges[] = { |
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REGULATOR_LINEAR_RANGE(1000000, 0, 20, 100000), |
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REGULATOR_LINEAR_RANGE(3000000, 21, 31, 0), |
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}; |
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static const struct linear_range rt5033_ldo_ranges[] = { |
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REGULATOR_LINEAR_RANGE(1200000, 0, 18, 100000), |
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REGULATOR_LINEAR_RANGE(3000000, 19, 31, 0), |
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}; |
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static const struct regulator_ops rt5033_safe_ldo_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.list_voltage = regulator_list_voltage_linear, |
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}; |
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static const struct regulator_ops rt5033_buck_ops = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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.list_voltage = regulator_list_voltage_linear_range, |
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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_desc rt5033_supported_regulators[] = { |
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[RT5033_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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.id = RT5033_BUCK, |
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.ops = &rt5033_buck_ops, |
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.type = REGULATOR_VOLTAGE, |
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.owner = THIS_MODULE, |
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.n_voltages = RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM, |
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.linear_ranges = rt5033_buck_ranges, |
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.n_linear_ranges = ARRAY_SIZE(rt5033_buck_ranges), |
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.enable_reg = RT5033_REG_CTRL, |
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.enable_mask = RT5033_CTRL_EN_BUCK_MASK, |
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.vsel_reg = RT5033_REG_BUCK_CTRL, |
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.vsel_mask = RT5033_BUCK_CTRL_MASK, |
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}, |
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[RT5033_LDO] = { |
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.name = "LDO", |
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.of_match = of_match_ptr("LDO"), |
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.regulators_node = of_match_ptr("regulators"), |
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.id = RT5033_LDO, |
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.ops = &rt5033_buck_ops, |
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.type = REGULATOR_VOLTAGE, |
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.owner = THIS_MODULE, |
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.n_voltages = RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM, |
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.linear_ranges = rt5033_ldo_ranges, |
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.n_linear_ranges = ARRAY_SIZE(rt5033_ldo_ranges), |
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.enable_reg = RT5033_REG_CTRL, |
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.enable_mask = RT5033_CTRL_EN_LDO_MASK, |
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.vsel_reg = RT5033_REG_LDO_CTRL, |
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.vsel_mask = RT5033_LDO_CTRL_MASK, |
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}, |
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[RT5033_SAFE_LDO] = { |
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.name = "SAFE_LDO", |
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.of_match = of_match_ptr("SAFE_LDO"), |
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.regulators_node = of_match_ptr("regulators"), |
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.id = RT5033_SAFE_LDO, |
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.ops = &rt5033_safe_ldo_ops, |
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.type = REGULATOR_VOLTAGE, |
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.owner = THIS_MODULE, |
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.n_voltages = 1, |
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.min_uV = RT5033_REGULATOR_SAFE_LDO_VOLTAGE, |
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.enable_reg = RT5033_REG_CTRL, |
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.enable_mask = RT5033_CTRL_EN_SAFE_LDO_MASK, |
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}, |
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}; |
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static int rt5033_regulator_probe(struct platform_device *pdev) |
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{ |
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struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent); |
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int ret, i; |
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struct regulator_config config = {}; |
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config.dev = rt5033->dev; |
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config.driver_data = rt5033; |
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for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) { |
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struct regulator_dev *regulator; |
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config.regmap = rt5033->regmap; |
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regulator = devm_regulator_register(&pdev->dev, |
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&rt5033_supported_regulators[i], &config); |
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if (IS_ERR(regulator)) { |
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ret = PTR_ERR(regulator); |
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dev_err(&pdev->dev, |
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"Regulator init failed %d: with error: %d\n", |
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i, 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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static const struct platform_device_id rt5033_regulator_id[] = { |
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{ "rt5033-regulator", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(platform, rt5033_regulator_id); |
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static struct platform_driver rt5033_regulator_driver = { |
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.driver = { |
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.name = "rt5033-regulator", |
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}, |
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.probe = rt5033_regulator_probe, |
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.id_table = rt5033_regulator_id, |
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}; |
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module_platform_driver(rt5033_regulator_driver); |
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MODULE_DESCRIPTION("Richtek RT5033 Regulator driver"); |
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MODULE_AUTHOR("Beomho Seo <[email protected]>"); |
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MODULE_LICENSE("GPL");
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