1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* NXP PCF50633 PMIC Driver
3 *
4 * (C) 2006-2008 by Openmoko, Inc.
5 * Author: Balaji Rao <balajirrao@openmoko.org>
6 * All rights reserved.
7 *
8 * Broken down from monstrous PCF50633 driver mainly by
9 * Harald Welte and Andy Green and Werner Almesberger
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/device.h>
16 #include <linux/err.h>
17 #include <linux/platform_device.h>
18
19 #include <linux/mfd/pcf50633/core.h>
20 #include <linux/mfd/pcf50633/pmic.h>
21
22 #define PCF50633_REGULATOR(_name, _id, _min_uV, _uV_step, _min_sel, _n) \
23 { \
24 .name = _name, \
25 .id = PCF50633_REGULATOR_##_id, \
26 .ops = &pcf50633_regulator_ops, \
27 .n_voltages = _n, \
28 .min_uV = _min_uV, \
29 .uV_step = _uV_step, \
30 .linear_min_sel = _min_sel, \
31 .type = REGULATOR_VOLTAGE, \
32 .owner = THIS_MODULE, \
33 .vsel_reg = PCF50633_REG_##_id##OUT, \
34 .vsel_mask = 0xff, \
35 .enable_reg = PCF50633_REG_##_id##OUT + 1, \
36 .enable_mask = PCF50633_REGULATOR_ON, \
37 }
38
39 static const struct regulator_ops pcf50633_regulator_ops = {
40 .set_voltage_sel = regulator_set_voltage_sel_regmap,
41 .get_voltage_sel = regulator_get_voltage_sel_regmap,
42 .list_voltage = regulator_list_voltage_linear,
43 .map_voltage = regulator_map_voltage_linear,
44 .enable = regulator_enable_regmap,
45 .disable = regulator_disable_regmap,
46 .is_enabled = regulator_is_enabled_regmap,
47 };
48
49 static const struct regulator_desc regulators[] = {
50 [PCF50633_REGULATOR_AUTO] =
51 PCF50633_REGULATOR("auto", AUTO, 1800000, 25000, 0x2f, 128),
52 [PCF50633_REGULATOR_DOWN1] =
53 PCF50633_REGULATOR("down1", DOWN1, 625000, 25000, 0, 96),
54 [PCF50633_REGULATOR_DOWN2] =
55 PCF50633_REGULATOR("down2", DOWN2, 625000, 25000, 0, 96),
56 [PCF50633_REGULATOR_LDO1] =
57 PCF50633_REGULATOR("ldo1", LDO1, 900000, 100000, 0, 28),
58 [PCF50633_REGULATOR_LDO2] =
59 PCF50633_REGULATOR("ldo2", LDO2, 900000, 100000, 0, 28),
60 [PCF50633_REGULATOR_LDO3] =
61 PCF50633_REGULATOR("ldo3", LDO3, 900000, 100000, 0, 28),
62 [PCF50633_REGULATOR_LDO4] =
63 PCF50633_REGULATOR("ldo4", LDO4, 900000, 100000, 0, 28),
64 [PCF50633_REGULATOR_LDO5] =
65 PCF50633_REGULATOR("ldo5", LDO5, 900000, 100000, 0, 28),
66 [PCF50633_REGULATOR_LDO6] =
67 PCF50633_REGULATOR("ldo6", LDO6, 900000, 100000, 0, 28),
68 [PCF50633_REGULATOR_HCLDO] =
69 PCF50633_REGULATOR("hcldo", HCLDO, 900000, 100000, 0, 28),
70 [PCF50633_REGULATOR_MEMLDO] =
71 PCF50633_REGULATOR("memldo", MEMLDO, 900000, 100000, 0, 28),
72 };
73
pcf50633_regulator_probe(struct platform_device * pdev)74 static int pcf50633_regulator_probe(struct platform_device *pdev)
75 {
76 struct regulator_dev *rdev;
77 struct pcf50633 *pcf;
78 struct regulator_config config = { };
79
80 /* Already set by core driver */
81 pcf = dev_to_pcf50633(pdev->dev.parent);
82
83 config.dev = &pdev->dev;
84 config.init_data = dev_get_platdata(&pdev->dev);
85 config.driver_data = pcf;
86 config.regmap = pcf->regmap;
87
88 rdev = devm_regulator_register(&pdev->dev, ®ulators[pdev->id],
89 &config);
90 if (IS_ERR(rdev))
91 return PTR_ERR(rdev);
92
93 platform_set_drvdata(pdev, rdev);
94
95 if (pcf->pdata->regulator_registered)
96 pcf->pdata->regulator_registered(pcf, pdev->id);
97
98 return 0;
99 }
100
101 static struct platform_driver pcf50633_regulator_driver = {
102 .driver = {
103 .name = "pcf50633-regulator",
104 },
105 .probe = pcf50633_regulator_probe,
106 };
107
pcf50633_regulator_init(void)108 static int __init pcf50633_regulator_init(void)
109 {
110 return platform_driver_register(&pcf50633_regulator_driver);
111 }
112 subsys_initcall(pcf50633_regulator_init);
113
pcf50633_regulator_exit(void)114 static void __exit pcf50633_regulator_exit(void)
115 {
116 platform_driver_unregister(&pcf50633_regulator_driver);
117 }
118 module_exit(pcf50633_regulator_exit);
119
120 MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
121 MODULE_DESCRIPTION("PCF50633 regulator driver");
122 MODULE_LICENSE("GPL");
123 MODULE_ALIAS("platform:pcf50633-regulator");
124