projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b1917578 BS |
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 | .id = RT5033_BUCK, | |
| 40 | .ops = &rt5033_buck_ops, | |
| 41 | .type = REGULATOR_VOLTAGE, | |
| 42 | .owner = THIS_MODULE, | |
| 43 | .n_voltages = RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM, | |
| 44 | .min_uV = RT5033_REGULATOR_BUCK_VOLTAGE_MIN, | |
| 45 | .uV_step = RT5033_REGULATOR_BUCK_VOLTAGE_STEP, | |
| 46 | .enable_reg = RT5033_REG_CTRL, | |
| 47 | .enable_mask = RT5033_CTRL_EN_BUCK_MASK, | |
| 48 | .vsel_reg = RT5033_REG_BUCK_CTRL, | |
| 49 | .vsel_mask = RT5033_BUCK_CTRL_MASK, | |
| 50 | }, | |
| 51 | [RT5033_LDO] = { | |
| 52 | .name = "LDO", | |
| 53 | .id = RT5033_LDO, | |
| 54 | .ops = &rt5033_buck_ops, | |
| 55 | .type = REGULATOR_VOLTAGE, | |
| 56 | .owner = THIS_MODULE, | |
| 57 | .n_voltages = RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM, | |
| 58 | .min_uV = RT5033_REGULATOR_LDO_VOLTAGE_MIN, | |
| 59 | .uV_step = RT5033_REGULATOR_LDO_VOLTAGE_STEP, | |
| 60 | .enable_reg = RT5033_REG_CTRL, | |
| 61 | .enable_mask = RT5033_CTRL_EN_LDO_MASK, | |
| 62 | .vsel_reg = RT5033_REG_LDO_CTRL, | |
| 63 | .vsel_mask = RT5033_LDO_CTRL_MASK, | |
| 64 | }, | |
| 65 | [RT5033_SAFE_LDO] = { | |
| 66 | .name = "SAFE_LDO", | |
| 67 | .id = RT5033_SAFE_LDO, | |
| 68 | .ops = &rt5033_safe_ldo_ops, | |
| 69 | .type = REGULATOR_VOLTAGE, | |
| 70 | .owner = THIS_MODULE, | |
| 71 | .n_voltages = 1, | |
| 72 | .min_uV = RT5033_REGULATOR_SAFE_LDO_VOLTAGE, | |
| 73 | .enable_reg = RT5033_REG_CTRL, | |
| 74 | .enable_mask = RT5033_CTRL_EN_SAFE_LDO_MASK, | |
| 75 | }, | |
| 76 | }; | |
| 77 | ||
| 78 | static int rt5033_regulator_probe(struct platform_device *pdev) | |
| 79 | { | |
| 80 | struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent); | |
| 81 | int ret, i; | |
| 82 | struct regulator_config config = {}; | |
| 83 | ||
| 84 | config.dev = &pdev->dev; | |
| 85 | config.driver_data = rt5033; | |
| 86 | ||
| 87 | for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) { | |
| 88 | struct regulator_dev *regulator; | |
| 89 | ||
| 90 | config.regmap = rt5033->regmap; | |
| 91 | ||
| 92 | regulator = devm_regulator_register(&pdev->dev, | |
| 93 | &rt5033_supported_regulators[i], &config); | |
| 94 | if (IS_ERR(regulator)) { | |
| 95 | ret = PTR_ERR(regulator); | |
| 96 | dev_err(&pdev->dev, | |
| 97 | "Regulator init failed %d: with error: %d\n", | |
| 98 | i, ret); | |
| 99 | return ret; | |
| 100 | } | |
| 101 | } | |
| 102 | ||
| 103 | return 0; | |
| 104 | } | |
| 105 | ||
| 106 | static const struct platform_device_id rt5033_regulator_id[] = { | |
| 107 | { "rt5033-regulator", }, | |
| 108 | { } | |
| 109 | }; | |
| 110 | MODULE_DEVICE_TABLE(platform, rt5033_regulator_id); | |
| 111 | ||
| 112 | static struct platform_driver rt5033_regulator_driver = { | |
| 113 | .driver = { | |
| 114 | .name = "rt5033-regulator", | |
| 115 | }, | |
| 116 | .probe = rt5033_regulator_probe, | |
| 117 | .id_table = rt5033_regulator_id, | |
| 118 | }; | |
| 119 | module_platform_driver(rt5033_regulator_driver); | |
| 120 | ||
| 121 | MODULE_DESCRIPTION("Richtek RT5033 Regulator driver"); | |
| 122 | MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>"); | |
| 123 | MODULE_LICENSE("GPL"); |