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 const 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