1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Regulator driver for Ricoh RN5T618 PMIC |
4 | * |
5 | * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com> |
6 | */ |
7 | |
8 | #include <linux/mfd/rn5t618.h> |
9 | #include <linux/module.h> |
10 | #include <linux/of.h> |
11 | #include <linux/platform_device.h> |
12 | #include <linux/regmap.h> |
13 | #include <linux/regulator/driver.h> |
14 | #include <linux/regulator/of_regulator.h> |
15 | |
16 | static const struct regulator_ops rn5t618_reg_ops = { |
17 | .enable = regulator_enable_regmap, |
18 | .disable = regulator_disable_regmap, |
19 | .is_enabled = regulator_is_enabled_regmap, |
20 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
21 | .get_voltage_sel = regulator_get_voltage_sel_regmap, |
22 | .list_voltage = regulator_list_voltage_linear, |
23 | }; |
24 | |
25 | #define REG(rid, ereg, emask, vreg, vmask, min, max, step) \ |
26 | { \ |
27 | .name = #rid, \ |
28 | .of_match = of_match_ptr(#rid), \ |
29 | .regulators_node = of_match_ptr("regulators"), \ |
30 | .id = RN5T618_##rid, \ |
31 | .type = REGULATOR_VOLTAGE, \ |
32 | .owner = THIS_MODULE, \ |
33 | .ops = &rn5t618_reg_ops, \ |
34 | .n_voltages = ((max) - (min)) / (step) + 1, \ |
35 | .min_uV = (min), \ |
36 | .uV_step = (step), \ |
37 | .enable_reg = RN5T618_##ereg, \ |
38 | .enable_mask = (emask), \ |
39 | .vsel_reg = RN5T618_##vreg, \ |
40 | .vsel_mask = (vmask), \ |
41 | } |
42 | |
43 | static const struct regulator_desc rn5t567_regulators[] = { |
44 | /* DCDC */ |
45 | REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), |
46 | REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), |
47 | REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), |
48 | REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500), |
49 | /* LDO */ |
50 | REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), |
51 | REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), |
52 | REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000), |
53 | REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), |
54 | REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000), |
55 | /* LDO RTC */ |
56 | REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1200000, 3500000, 25000), |
57 | REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), |
58 | }; |
59 | |
60 | static const struct regulator_desc rn5t618_regulators[] = { |
61 | /* DCDC */ |
62 | REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), |
63 | REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), |
64 | REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), |
65 | /* LDO */ |
66 | REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), |
67 | REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), |
68 | REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 600000, 3500000, 25000), |
69 | REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), |
70 | REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 900000, 3500000, 25000), |
71 | /* LDO RTC */ |
72 | REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000), |
73 | REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), |
74 | }; |
75 | |
76 | static const struct regulator_desc rc5t619_regulators[] = { |
77 | /* DCDC */ |
78 | REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500), |
79 | REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500), |
80 | REG(DCDC3, DC3CTL, BIT(0), DC3DAC, 0xff, 600000, 3500000, 12500), |
81 | REG(DCDC4, DC4CTL, BIT(0), DC4DAC, 0xff, 600000, 3500000, 12500), |
82 | REG(DCDC5, DC5CTL, BIT(0), DC5DAC, 0xff, 600000, 3500000, 12500), |
83 | /* LDO */ |
84 | REG(LDO1, LDOEN1, BIT(0), LDO1DAC, 0x7f, 900000, 3500000, 25000), |
85 | REG(LDO2, LDOEN1, BIT(1), LDO2DAC, 0x7f, 900000, 3500000, 25000), |
86 | REG(LDO3, LDOEN1, BIT(2), LDO3DAC, 0x7f, 900000, 3500000, 25000), |
87 | REG(LDO4, LDOEN1, BIT(3), LDO4DAC, 0x7f, 900000, 3500000, 25000), |
88 | REG(LDO5, LDOEN1, BIT(4), LDO5DAC, 0x7f, 600000, 3500000, 25000), |
89 | REG(LDO6, LDOEN1, BIT(5), LDO6DAC, 0x7f, 600000, 3500000, 25000), |
90 | REG(LDO7, LDOEN1, BIT(6), LDO7DAC, 0x7f, 900000, 3500000, 25000), |
91 | REG(LDO8, LDOEN1, BIT(7), LDO8DAC, 0x7f, 900000, 3500000, 25000), |
92 | REG(LDO9, LDOEN2, BIT(0), LDO9DAC, 0x7f, 900000, 3500000, 25000), |
93 | REG(LDO10, LDOEN2, BIT(1), LDO10DAC, 0x7f, 900000, 3500000, 25000), |
94 | /* LDO RTC */ |
95 | REG(LDORTC1, LDOEN2, BIT(4), LDORTCDAC, 0x7f, 1700000, 3500000, 25000), |
96 | REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000), |
97 | }; |
98 | |
99 | static int rn5t618_regulator_probe(struct platform_device *pdev) |
100 | { |
101 | struct rn5t618 *rn5t618 = dev_get_drvdata(dev: pdev->dev.parent); |
102 | struct regulator_config config = { }; |
103 | struct regulator_dev *rdev; |
104 | const struct regulator_desc *regulators; |
105 | int i; |
106 | int num_regulators = 0; |
107 | |
108 | switch (rn5t618->variant) { |
109 | case RN5T567: |
110 | regulators = rn5t567_regulators; |
111 | num_regulators = ARRAY_SIZE(rn5t567_regulators); |
112 | break; |
113 | case RN5T618: |
114 | regulators = rn5t618_regulators; |
115 | num_regulators = ARRAY_SIZE(rn5t618_regulators); |
116 | break; |
117 | case RC5T619: |
118 | regulators = rc5t619_regulators; |
119 | num_regulators = ARRAY_SIZE(rc5t619_regulators); |
120 | break; |
121 | default: |
122 | return -EINVAL; |
123 | } |
124 | |
125 | config.dev = pdev->dev.parent; |
126 | config.regmap = rn5t618->regmap; |
127 | |
128 | for (i = 0; i < num_regulators; i++) { |
129 | rdev = devm_regulator_register(dev: &pdev->dev, |
130 | regulator_desc: ®ulators[i], |
131 | config: &config); |
132 | if (IS_ERR(ptr: rdev)) { |
133 | dev_err(&pdev->dev, "failed to register %s regulator\n" , |
134 | regulators[i].name); |
135 | return PTR_ERR(ptr: rdev); |
136 | } |
137 | } |
138 | |
139 | return 0; |
140 | } |
141 | |
142 | static struct platform_driver rn5t618_regulator_driver = { |
143 | .probe = rn5t618_regulator_probe, |
144 | .driver = { |
145 | .name = "rn5t618-regulator" , |
146 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, |
147 | }, |
148 | }; |
149 | |
150 | module_platform_driver(rn5t618_regulator_driver); |
151 | |
152 | MODULE_ALIAS("platform:rn5t618-regulator" ); |
153 | MODULE_AUTHOR("Beniamino Galvani <b.galvani@gmail.com>" ); |
154 | MODULE_DESCRIPTION("RN5T618 regulator driver" ); |
155 | MODULE_LICENSE("GPL v2" ); |
156 | |