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 
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, &regulators[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 
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 
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