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d925da5c | 1 | // SPDX-License-Identifier: GPL-2.0-only |
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2 | /* |
3 | * Regulator driver for the Richtek RT5033 | |
4 | * | |
5 | * Copyright (C) 2014 Samsung Electronics, Co., Ltd. | |
6 | * Author: Beomho Seo <beomho.seo@samsung.com> | |
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7 | */ |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/platform_device.h> | |
11 | #include <linux/regulator/driver.h> | |
12 | #include <linux/mfd/rt5033.h> | |
13 | #include <linux/mfd/rt5033-private.h> | |
14 | #include <linux/regulator/of_regulator.h> | |
15 | ||
dd4cae9c | 16 | static const struct regulator_ops rt5033_safe_ldo_ops = { |
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17 | .is_enabled = regulator_is_enabled_regmap, |
18 | .enable = regulator_enable_regmap, | |
19 | .disable = regulator_disable_regmap, | |
20 | .list_voltage = regulator_list_voltage_linear, | |
21 | }; | |
22 | ||
dd4cae9c | 23 | static const struct regulator_ops rt5033_buck_ops = { |
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24 | .is_enabled = regulator_is_enabled_regmap, |
25 | .enable = regulator_enable_regmap, | |
26 | .disable = regulator_disable_regmap, | |
27 | .list_voltage = regulator_list_voltage_linear, | |
28 | .map_voltage = regulator_map_voltage_linear, | |
29 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
30 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
31 | }; | |
32 | ||
33 | static const struct regulator_desc rt5033_supported_regulators[] = { | |
34 | [RT5033_BUCK] = { | |
35 | .name = "BUCK", | |
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36 | .of_match = of_match_ptr("BUCK"), |
37 | .regulators_node = of_match_ptr("regulators"), | |
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38 | .id = RT5033_BUCK, |
39 | .ops = &rt5033_buck_ops, | |
40 | .type = REGULATOR_VOLTAGE, | |
41 | .owner = THIS_MODULE, | |
42 | .n_voltages = RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM, | |
43 | .min_uV = RT5033_REGULATOR_BUCK_VOLTAGE_MIN, | |
44 | .uV_step = RT5033_REGULATOR_BUCK_VOLTAGE_STEP, | |
45 | .enable_reg = RT5033_REG_CTRL, | |
46 | .enable_mask = RT5033_CTRL_EN_BUCK_MASK, | |
47 | .vsel_reg = RT5033_REG_BUCK_CTRL, | |
48 | .vsel_mask = RT5033_BUCK_CTRL_MASK, | |
49 | }, | |
50 | [RT5033_LDO] = { | |
51 | .name = "LDO", | |
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52 | .of_match = of_match_ptr("LDO"), |
53 | .regulators_node = of_match_ptr("regulators"), | |
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54 | .id = RT5033_LDO, |
55 | .ops = &rt5033_buck_ops, | |
56 | .type = REGULATOR_VOLTAGE, | |
57 | .owner = THIS_MODULE, | |
58 | .n_voltages = RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM, | |
59 | .min_uV = RT5033_REGULATOR_LDO_VOLTAGE_MIN, | |
60 | .uV_step = RT5033_REGULATOR_LDO_VOLTAGE_STEP, | |
61 | .enable_reg = RT5033_REG_CTRL, | |
62 | .enable_mask = RT5033_CTRL_EN_LDO_MASK, | |
63 | .vsel_reg = RT5033_REG_LDO_CTRL, | |
64 | .vsel_mask = RT5033_LDO_CTRL_MASK, | |
65 | }, | |
66 | [RT5033_SAFE_LDO] = { | |
67 | .name = "SAFE_LDO", | |
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68 | .of_match = of_match_ptr("SAFE_LDO"), |
69 | .regulators_node = of_match_ptr("regulators"), | |
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70 | .id = RT5033_SAFE_LDO, |
71 | .ops = &rt5033_safe_ldo_ops, | |
72 | .type = REGULATOR_VOLTAGE, | |
73 | .owner = THIS_MODULE, | |
74 | .n_voltages = 1, | |
75 | .min_uV = RT5033_REGULATOR_SAFE_LDO_VOLTAGE, | |
76 | .enable_reg = RT5033_REG_CTRL, | |
77 | .enable_mask = RT5033_CTRL_EN_SAFE_LDO_MASK, | |
78 | }, | |
79 | }; | |
80 | ||
81 | static int rt5033_regulator_probe(struct platform_device *pdev) | |
82 | { | |
83 | struct rt5033_dev *rt5033 = dev_get_drvdata(pdev->dev.parent); | |
84 | int ret, i; | |
85 | struct regulator_config config = {}; | |
86 | ||
53aebb7f | 87 | config.dev = rt5033->dev; |
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88 | config.driver_data = rt5033; |
89 | ||
90 | for (i = 0; i < ARRAY_SIZE(rt5033_supported_regulators); i++) { | |
91 | struct regulator_dev *regulator; | |
92 | ||
93 | config.regmap = rt5033->regmap; | |
94 | ||
95 | regulator = devm_regulator_register(&pdev->dev, | |
96 | &rt5033_supported_regulators[i], &config); | |
97 | if (IS_ERR(regulator)) { | |
98 | ret = PTR_ERR(regulator); | |
99 | dev_err(&pdev->dev, | |
100 | "Regulator init failed %d: with error: %d\n", | |
101 | i, ret); | |
102 | return ret; | |
103 | } | |
104 | } | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | static const struct platform_device_id rt5033_regulator_id[] = { | |
110 | { "rt5033-regulator", }, | |
111 | { } | |
112 | }; | |
113 | MODULE_DEVICE_TABLE(platform, rt5033_regulator_id); | |
114 | ||
115 | static struct platform_driver rt5033_regulator_driver = { | |
116 | .driver = { | |
117 | .name = "rt5033-regulator", | |
118 | }, | |
119 | .probe = rt5033_regulator_probe, | |
120 | .id_table = rt5033_regulator_id, | |
121 | }; | |
122 | module_platform_driver(rt5033_regulator_driver); | |
123 | ||
124 | MODULE_DESCRIPTION("Richtek RT5033 Regulator driver"); | |
125 | MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>"); | |
126 | MODULE_LICENSE("GPL"); |