1/* NXP PCF50633 PMIC Driver
2 *
3 * (C) 2006-2008 by Openmoko, Inc.
4 * Author: Balaji Rao <balajirrao@openmoko.org>
5 * All rights reserved.
6 *
7 * Broken down from monstrous PCF50633 driver mainly by
8 * Harald Welte and Andy Green and Werner Almesberger
9 *
10 *  This program is free software; you can redistribute  it and/or modify it
11 *  under  the terms of  the GNU General  Public License as published by the
12 *  Free Software Foundation;  either version 2 of the  License, or (at your
13 *  option) any later version.
14 *
15 */
16
17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/init.h>
20#include <linux/device.h>
21#include <linux/err.h>
22#include <linux/platform_device.h>
23
24#include <linux/mfd/pcf50633/core.h>
25#include <linux/mfd/pcf50633/pmic.h>
26
27#define PCF50633_REGULATOR(_name, _id, _min_uV, _uV_step, _min_sel, _n) \
28	{							\
29		.name = _name,					\
30		.id = PCF50633_REGULATOR_##_id,			\
31		.ops = &pcf50633_regulator_ops,			\
32		.n_voltages = _n,				\
33		.min_uV = _min_uV,				\
34		.uV_step = _uV_step,				\
35		.linear_min_sel = _min_sel,			\
36		.type = REGULATOR_VOLTAGE,			\
37		.owner = THIS_MODULE,				\
38		.vsel_reg = PCF50633_REG_##_id##OUT,		\
39		.vsel_mask = 0xff,				\
40		.enable_reg = PCF50633_REG_##_id##OUT + 1,	\
41		.enable_mask = PCF50633_REGULATOR_ON,		\
42	}
43
44static struct regulator_ops pcf50633_regulator_ops = {
45	.set_voltage_sel = regulator_set_voltage_sel_regmap,
46	.get_voltage_sel = regulator_get_voltage_sel_regmap,
47	.list_voltage = regulator_list_voltage_linear,
48	.map_voltage = regulator_map_voltage_linear,
49	.enable = regulator_enable_regmap,
50	.disable = regulator_disable_regmap,
51	.is_enabled = regulator_is_enabled_regmap,
52};
53
54static const struct regulator_desc regulators[] = {
55	[PCF50633_REGULATOR_AUTO] =
56		PCF50633_REGULATOR("auto", AUTO, 1800000, 25000, 0x2f, 128),
57	[PCF50633_REGULATOR_DOWN1] =
58		PCF50633_REGULATOR("down1", DOWN1, 625000, 25000, 0, 96),
59	[PCF50633_REGULATOR_DOWN2] =
60		PCF50633_REGULATOR("down2", DOWN2, 625000, 25000, 0, 96),
61	[PCF50633_REGULATOR_LDO1] =
62		PCF50633_REGULATOR("ldo1", LDO1, 900000, 100000, 0, 28),
63	[PCF50633_REGULATOR_LDO2] =
64		PCF50633_REGULATOR("ldo2", LDO2, 900000, 100000, 0, 28),
65	[PCF50633_REGULATOR_LDO3] =
66		PCF50633_REGULATOR("ldo3", LDO3, 900000, 100000, 0, 28),
67	[PCF50633_REGULATOR_LDO4] =
68		PCF50633_REGULATOR("ldo4", LDO4, 900000, 100000, 0, 28),
69	[PCF50633_REGULATOR_LDO5] =
70		PCF50633_REGULATOR("ldo5", LDO5, 900000, 100000, 0, 28),
71	[PCF50633_REGULATOR_LDO6] =
72		PCF50633_REGULATOR("ldo6", LDO6, 900000, 100000, 0, 28),
73	[PCF50633_REGULATOR_HCLDO] =
74		PCF50633_REGULATOR("hcldo", HCLDO, 900000, 100000, 0, 28),
75	[PCF50633_REGULATOR_MEMLDO] =
76		PCF50633_REGULATOR("memldo", MEMLDO, 900000, 100000, 0, 28),
77};
78
79static int pcf50633_regulator_probe(struct platform_device *pdev)
80{
81	struct regulator_dev *rdev;
82	struct pcf50633 *pcf;
83	struct regulator_config config = { };
84
85	/* Already set by core driver */
86	pcf = dev_to_pcf50633(pdev->dev.parent);
87
88	config.dev = &pdev->dev;
89	config.init_data = dev_get_platdata(&pdev->dev);
90	config.driver_data = pcf;
91	config.regmap = pcf->regmap;
92
93	rdev = devm_regulator_register(&pdev->dev, &regulators[pdev->id],
94				       &config);
95	if (IS_ERR(rdev))
96		return PTR_ERR(rdev);
97
98	platform_set_drvdata(pdev, rdev);
99
100	if (pcf->pdata->regulator_registered)
101		pcf->pdata->regulator_registered(pcf, pdev->id);
102
103	return 0;
104}
105
106static struct platform_driver pcf50633_regulator_driver = {
107	.driver = {
108		.name = "pcf50633-regulator",
109	},
110	.probe = pcf50633_regulator_probe,
111};
112
113static int __init pcf50633_regulator_init(void)
114{
115	return platform_driver_register(&pcf50633_regulator_driver);
116}
117subsys_initcall(pcf50633_regulator_init);
118
119static void __exit pcf50633_regulator_exit(void)
120{
121	platform_driver_unregister(&pcf50633_regulator_driver);
122}
123module_exit(pcf50633_regulator_exit);
124
125MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
126MODULE_DESCRIPTION("PCF50633 regulator driver");
127MODULE_LICENSE("GPL");
128MODULE_ALIAS("platform:pcf50633-regulator");
129