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
39static 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
49static 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
74static 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
101static struct platform_driver pcf50633_regulator_driver = {
102	.driver = {
103		.name = "pcf50633-regulator",
104		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
105	},
106	.probe = pcf50633_regulator_probe,
107};
108
109static int __init pcf50633_regulator_init(void)
110{
111	return platform_driver_register(&pcf50633_regulator_driver);
112}
113subsys_initcall(pcf50633_regulator_init);
114
115static void __exit pcf50633_regulator_exit(void)
116{
117	platform_driver_unregister(&pcf50633_regulator_driver);
118}
119module_exit(pcf50633_regulator_exit);
120
121MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
122MODULE_DESCRIPTION("PCF50633 regulator driver");
123MODULE_LICENSE("GPL");
124MODULE_ALIAS("platform:pcf50633-regulator");
125