1/*
2 * Regulator driver for Ricoh RN5T618 PMIC
3 *
4 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * You should have received a copy of the GNU General Public License
11 * along with this program. If not, see <http://www.gnu.org/licenses/>.
12 */
13
14#include <linux/mfd/rn5t618.h>
15#include <linux/module.h>
16#include <linux/of.h>
17#include <linux/platform_device.h>
18#include <linux/regmap.h>
19#include <linux/regulator/driver.h>
20#include <linux/regulator/of_regulator.h>
21
22static const struct regulator_ops rn5t618_reg_ops = {
23 .enable = regulator_enable_regmap,
24 .disable = regulator_disable_regmap,
25 .is_enabled = regulator_is_enabled_regmap,
26 .set_voltage_sel = regulator_set_voltage_sel_regmap,
27 .get_voltage_sel = regulator_get_voltage_sel_regmap,
28 .list_voltage = regulator_list_voltage_linear,
29};
30
31#define REG(rid, ereg, emask, vreg, vmask, min, max, step) \
32 { \
33 .name = #rid, \
34 .of_match = of_match_ptr(#rid), \
35 .regulators_node = of_match_ptr("regulators"), \
36 .id = RN5T618_##rid, \
37 .type = REGULATOR_VOLTAGE, \
38 .owner = THIS_MODULE, \
39 .ops = &rn5t618_reg_ops, \
40 .n_voltages = ((max) - (min)) / (step) + 1, \
41 .min_uV = (min), \
42 .uV_step = (step), \
43 .enable_reg = RN5T618_##ereg, \
44 .enable_mask = (emask), \
45 .vsel_reg = RN5T618_##vreg, \
46 .vsel_mask = (vmask), \
47 }
48
49static struct regulator_desc rn5t567_regulators[] = {
50 /* DCDC */
51 REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
52 REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
53 REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
54 REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
55 /* LDO */
56 REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
57 REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
58 REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
59 REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
60 REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
61 /* LDO RTC */
62 REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1200000, 3500000, 25000),
63 REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
64};
65
66static struct regulator_desc rn5t618_regulators[] = {
67 /* DCDC */
68 REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
69 REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
70 REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
71 /* LDO */
72 REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
73 REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
74 REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000),
75 REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
76 REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000),
77 /* LDO RTC */
78 REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
79 REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
80};
81
82static struct regulator_desc rc5t619_regulators[] = {
83 /* DCDC */
84 REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
85 REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
86 REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500),
87 REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500),
88 REG(DCDC5, DC5CTL, BIT(0), DC5DAC, 0xff, 600000, 3500000, 12500),
89 /* LDO */
90 REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000),
91 REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000),
92 REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 900000, 3500000, 25000),
93 REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000),
94 REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 600000, 3500000, 25000),
95 REG(LDO6, LDOEN1, BIT(5), LDO6DAC, 0x7f, 600000, 3500000, 25000),
96 REG(LDO7, LDOEN1, BIT(6), LDO7DAC, 0x7f, 900000, 3500000, 25000),
97 REG(LDO8, LDOEN1, BIT(7), LDO8DAC, 0x7f, 900000, 3500000, 25000),
98 REG(LDO9, LDOEN2, BIT(0), LDO9DAC, 0x7f, 900000, 3500000, 25000),
99 REG(LDO10, LDOEN2, BIT(0), LDO10DAC, 0x7f, 900000, 3500000, 25000),
100 /* LDO RTC */
101 REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000),
102 REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
103};
104
105static int rn5t618_regulator_probe(struct platform_device *pdev)
106{
107 struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
108 struct regulator_config config = { };
109 struct regulator_dev *rdev;
110 struct regulator_desc *regulators;
111 int i;
112 int num_regulators = 0;
113
114 switch (rn5t618->variant) {
115 case RN5T567:
116 regulators = rn5t567_regulators;
117 num_regulators = ARRAY_SIZE(rn5t567_regulators);
118 break;
119 case RN5T618:
120 regulators = rn5t618_regulators;
121 num_regulators = ARRAY_SIZE(rn5t618_regulators);
122 break;
123 case RC5T619:
124 regulators = rc5t619_regulators;
125 num_regulators = ARRAY_SIZE(rc5t619_regulators);
126 break;
127 default:
128 return -EINVAL;
129 }
130
131 config.dev = pdev->dev.parent;
132 config.regmap = rn5t618->regmap;
133
134 for (i = 0; i < num_regulators; i++) {
135 rdev = devm_regulator_register(&pdev->dev,
136 &regulators[i],
137 &config);
138 if (IS_ERR(rdev)) {
139 dev_err(&pdev->dev, "failed to register %s regulator\n",
140 regulators[i].name);
141 return PTR_ERR(rdev);
142 }
143 }
144
145 return 0;
146}
147
148static struct platform_driver rn5t618_regulator_driver = {
149 .probe = rn5t618_regulator_probe,
150 .driver = {
151 .name = "rn5t618-regulator",
152 },
153};
154
155module_platform_driver(rn5t618_regulator_driver);
156
157MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
158MODULE_DESCRIPTION("RN5T618 regulator driver");
159MODULE_LICENSE("GPL v2");
160