| Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Regulator driver for the Richtek RT5033 |
| 3 | * |
| 4 | * Copyright (C) 2014 Samsung Electronics, Co., Ltd. |
| 5 | * Author: Beomho Seo <beomho.seo@samsung.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published bythe Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/platform_device.h> |
| 14 | #include <linux/regulator/driver.h> |
| 15 | #include <linux/mfd/rt5033.h> |
| 16 | #include <linux/mfd/rt5033-private.h> |
| 17 | #include <linux/regulator/of_regulator.h> |
| 18 | |
| 19 | static struct regulator_ops rt5033_safe_ldo_ops = { |
| 20 | .is_enabled = regulator_is_enabled_regmap, |
| 21 | .enable = regulator_enable_regmap, |
| 22 | .disable = regulator_disable_regmap, |
| 23 | .list_voltage = regulator_list_voltage_linear, |
| 24 | }; |
| 25 | |
| 26 | static struct regulator_ops rt5033_buck_ops = { |
| 27 | .is_enabled = regulator_is_enabled_regmap, |
| 28 | .enable = regulator_enable_regmap, |
| 29 | .disable = regulator_disable_regmap, |
| 30 | .list_voltage = regulator_list_voltage_linear, |
| 31 | .map_voltage = regulator_map_voltage_linear, |
| 32 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| 33 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| 34 | }; |
| 35 | |
| 36 | static const struct regulator_desc rt5033_supported_regulators[] = { |
| 37 | [RT5033_BUCK] = { |
| 38 | .name = "BUCK", |
| 39 | .of_match = of_match_ptr("BUCK"), |
| 40 | .regulators_node = of_match_ptr("regulators"), |
| 41 | .id = RT5033_BUCK, |
| 42 | .ops = &rt5033_buck_ops, |
| 43 | .type = REGULATOR_VOLTAGE, |
| 44 | .owner = THIS_MODULE, |
| 45 | .n_voltages = RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM, |
| 46 | .min_uV = RT5033_REGULATOR_BUCK_VOLTAGE_MIN, |
| 47 | .uV_step = RT5033_REGULATOR_BUCK_VOLTAGE_STEP, |
| 48 | .enable_reg = RT5033_REG_CTRL, |
| 49 | .enable_mask = RT5033_CTRL_EN_BUCK_MASK, |
| 50 | .vsel_reg = RT5033_REG_BUCK_CTRL, |
| 51 | .vsel_mask = RT5033_BUCK_CTRL_MASK, |
| 52 | }, |
| 53 | [RT5033_LDO] = { |
| 54 | .name = "LDO", |
| 55 | .of_match = of_match_ptr("LDO"), |
| 56 | .regulators_node = of_match_ptr("regulators"), |
| 57 | .id = RT5033_LDO, |
| 58 | .ops = &rt5033_buck_ops, |
| 59 | .type = REGULATOR_VOLTAGE, |
| 60 | .owner = THIS_MODULE, |
| 61 | .n_voltages = RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM, |
| 62 | .min_uV = RT5033_REGULATOR_LDO_VOLTAGE_MIN, |
| 63 | .uV_step = RT5033_REGULATOR_LDO_VOLTAGE_STEP, |
| 64 | .enable_reg = RT5033_REG_CTRL, |
| 65 | .enable_mask = RT5033_CTRL_EN_LDO_MASK, |
| 66 | .vsel_reg = RT5033_REG_LDO_CTRL, |
| 67 | .vsel_mask = RT5033_LDO_CTRL_MASK, |
| 68 | }, |
| 69 | [RT5033_SAFE_LDO] = { |
| 70 | .name = "SAFE_LDO", |
| 71 | .of_match = of_match_ptr("SAFE_LDO"), |
| 72 | .regulators_node = of_match_ptr("regulators"), |
| 73 | .id = RT5033_SAFE_LDO, |
| 74 | .ops = &rt5033_safe_ldo_ops, |
| 75 | .type = REGULATOR_VOLTAGE, |
| 76 | .owner = THIS_MODULE, |
| 77 | .n_voltages = 1, |
| 78 | .min_uV = RT5033_REGULATOR_SAFE_LDO_VOLTAGE, |
| 79 | .enable_reg = RT5033_REG_CTRL, |
| 80 | .enable_mask = RT5033_CTRL_EN_SAFE_LDO_MASK, |
| 81 | }, |
| 82 | }; |
| 83 | |
| 84 | static int rt5033_regulator_probe(struct platform_device *pdev) |
| 85 | { |
| 86 | struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent); |
| 87 | int ret, i; |
| 88 | struct regulator_config config = {}; |
| 89 | |
| 90 | config.dev = rt5033->dev; |
| 91 | config.driver_data = rt5033; |
| 92 | |
| 93 | for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) { |
| 94 | struct regulator_dev *regulator; |
| 95 | |
| 96 | config.regmap = rt5033->regmap; |
| 97 | |
| 98 | regulator = devm_regulator_register(&pdev->dev, |
| 99 | &rt5033_supported_regulators[i], &config); |
| 100 | if (IS_ERR(regulator)) { |
| 101 | ret = PTR_ERR(regulator); |
| 102 | dev_err(&pdev->dev, |
| 103 | "Regulator init failed %d: with error: %d\n", |
| 104 | i, ret); |
| 105 | return ret; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | static const struct platform_device_id rt5033_regulator_id[] = { |
| 113 | { "rt5033-regulator", }, |
| 114 | { } |
| 115 | }; |
| 116 | MODULE_DEVICE_TABLE(platform, rt5033_regulator_id); |
| 117 | |
| 118 | static struct platform_driver rt5033_regulator_driver = { |
| 119 | .driver = { |
| 120 | .name = "rt5033-regulator", |
| 121 | }, |
| 122 | .probe = rt5033_regulator_probe, |
| 123 | .id_table = rt5033_regulator_id, |
| 124 | }; |
| 125 | module_platform_driver(rt5033_regulator_driver); |
| 126 | |
| 127 | MODULE_DESCRIPTION("Richtek RT5033 Regulator driver"); |
| 128 | MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>"); |
| 129 | MODULE_LICENSE("GPL"); |