2 * Regulator driver for Ricoh RN5T618 PMIC
4 * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
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.
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/>.
14 #include <linux/mfd/rn5t618.h>
15 #include <linux/module.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>
22 static 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
,
31 #define REG(rid, ereg, emask, vreg, vmask, min, max, step) \
34 .id = RN5T618_##rid, \
35 .type = REGULATOR_VOLTAGE, \
36 .owner = THIS_MODULE, \
37 .ops = &rn5t618_reg_ops, \
38 .n_voltages = ((max) - (min)) / (step) + 1, \
41 .enable_reg = RN5T618_##ereg, \
42 .enable_mask = (emask), \
43 .vsel_reg = RN5T618_##vreg, \
44 .vsel_mask = (vmask), \
47 static struct regulator_desc rn5t618_regulators
[] = {
49 REG(DCDC1
, DC1CTL
, BIT(0), DC1DAC
, 0xff, 600000, 3500000, 12500),
50 REG(DCDC2
, DC2CTL
, BIT(0), DC2DAC
, 0xff, 600000, 3500000, 12500),
51 REG(DCDC3
, DC3CTL
, BIT(0), DC3DAC
, 0xff, 600000, 3500000, 12500),
53 REG(LDO1
, LDOEN1
, BIT(0), LDO1DAC
, 0x7f, 900000, 3500000, 25000),
54 REG(LDO2
, LDOEN1
, BIT(1), LDO2DAC
, 0x7f, 900000, 3500000, 25000),
55 REG(LDO3
, LDOEN1
, BIT(2), LDO3DAC
, 0x7f, 600000, 3500000, 25000),
56 REG(LDO4
, LDOEN1
, BIT(3), LDO4DAC
, 0x7f, 900000, 3500000, 25000),
57 REG(LDO5
, LDOEN1
, BIT(4), LDO5DAC
, 0x7f, 900000, 3500000, 25000),
59 REG(LDORTC1
, LDOEN2
, BIT(4), LDORTCDAC
, 0x7f, 1700000, 3500000, 25000),
60 REG(LDORTC2
, LDOEN2
, BIT(5), LDORTC2DAC
, 0x7f, 900000, 3500000, 25000),
63 static struct of_regulator_match rn5t618_matches
[] = {
64 [RN5T618_DCDC1
] = { .name
= "DCDC1" },
65 [RN5T618_DCDC2
] = { .name
= "DCDC2" },
66 [RN5T618_DCDC3
] = { .name
= "DCDC3" },
67 [RN5T618_LDO1
] = { .name
= "LDO1" },
68 [RN5T618_LDO2
] = { .name
= "LDO2" },
69 [RN5T618_LDO3
] = { .name
= "LDO3" },
70 [RN5T618_LDO4
] = { .name
= "LDO4" },
71 [RN5T618_LDO5
] = { .name
= "LDO5" },
72 [RN5T618_LDORTC1
] = { .name
= "LDORTC1" },
73 [RN5T618_LDORTC2
] = { .name
= "LDORTC2" },
76 static int rn5t618_regulator_parse_dt(struct platform_device
*pdev
)
78 struct device_node
*np
, *regulators
;
81 np
= of_node_get(pdev
->dev
.parent
->of_node
);
85 regulators
= of_get_child_by_name(np
, "regulators");
87 dev_err(&pdev
->dev
, "regulators node not found\n");
91 ret
= of_regulator_match(&pdev
->dev
, regulators
, rn5t618_matches
,
92 ARRAY_SIZE(rn5t618_matches
));
93 of_node_put(regulators
);
95 dev_err(&pdev
->dev
, "error parsing regulator init data: %d\n",
102 static int rn5t618_regulator_probe(struct platform_device
*pdev
)
104 struct rn5t618
*rn5t618
= dev_get_drvdata(pdev
->dev
.parent
);
105 struct regulator_config config
= { };
106 struct regulator_dev
*rdev
;
109 ret
= rn5t618_regulator_parse_dt(pdev
);
113 for (i
= 0; i
< RN5T618_REG_NUM
; i
++) {
114 config
.dev
= &pdev
->dev
;
115 config
.init_data
= rn5t618_matches
[i
].init_data
;
116 config
.of_node
= rn5t618_matches
[i
].of_node
;
117 config
.regmap
= rn5t618
->regmap
;
119 rdev
= devm_regulator_register(&pdev
->dev
,
120 &rn5t618_regulators
[i
],
123 dev_err(&pdev
->dev
, "failed to register %s regulator\n",
124 rn5t618_regulators
[i
].name
);
125 return PTR_ERR(rdev
);
132 static struct platform_driver rn5t618_regulator_driver
= {
133 .probe
= rn5t618_regulator_probe
,
135 .name
= "rn5t618-regulator",
139 module_platform_driver(rn5t618_regulator_driver
);
141 MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>");
142 MODULE_DESCRIPTION("RN5T618 regulator driver");
143 MODULE_LICENSE("GPL v2");