1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Regulator driver for TI TPS65912x PMICs
4 *
5 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
6 * Andrew F. Davis <afd@ti.com>
7 *
8 * Based on the TPS65218 driver and the previous TPS65912 driver by
9 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
10 */
11
12 #include <linux/module.h>
13 #include <linux/mod_devicetable.h>
14 #include <linux/platform_device.h>
15 #include <linux/regulator/driver.h>
16
17 #include <linux/mfd/tps65912.h>
18
19 enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
20 LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
21
22 #define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr) \
23 [_id] = { \
24 .name = _name, \
25 .of_match = _of_match, \
26 .regulators_node = "regulators", \
27 .id = _id, \
28 .ops = &_ops, \
29 .n_voltages = 64, \
30 .type = REGULATOR_VOLTAGE, \
31 .owner = THIS_MODULE, \
32 .vsel_reg = _vr, \
33 .vsel_mask = 0x3f, \
34 .enable_reg = _er, \
35 .enable_mask = BIT(7), \
36 .volt_table = NULL, \
37 .linear_ranges = _lr, \
38 .n_linear_ranges = ARRAY_SIZE(_lr), \
39 }
40
41 static const struct linear_range tps65912_dcdc_ranges[] = {
42 REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
43 };
44
45 static const struct linear_range tps65912_ldo_ranges[] = {
46 REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
47 REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
48 REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
49 };
50
51 /* Operations permitted on DCDCx */
52 static const struct regulator_ops tps65912_ops_dcdc = {
53 .is_enabled = regulator_is_enabled_regmap,
54 .enable = regulator_enable_regmap,
55 .disable = regulator_disable_regmap,
56 .get_voltage_sel = regulator_get_voltage_sel_regmap,
57 .set_voltage_sel = regulator_set_voltage_sel_regmap,
58 .list_voltage = regulator_list_voltage_linear_range,
59 };
60
61 /* Operations permitted on LDOx */
62 static const struct regulator_ops tps65912_ops_ldo = {
63 .is_enabled = regulator_is_enabled_regmap,
64 .enable = regulator_enable_regmap,
65 .disable = regulator_disable_regmap,
66 .get_voltage_sel = regulator_get_voltage_sel_regmap,
67 .set_voltage_sel = regulator_set_voltage_sel_regmap,
68 .list_voltage = regulator_list_voltage_linear_range,
69 .map_voltage = regulator_map_voltage_linear_range,
70 };
71
72 static const struct regulator_desc regulators[] = {
73 TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
74 TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
75 tps65912_dcdc_ranges),
76 TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
77 TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
78 tps65912_dcdc_ranges),
79 TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
80 TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
81 tps65912_dcdc_ranges),
82 TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
83 TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
84 tps65912_dcdc_ranges),
85 TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
86 TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
87 tps65912_ldo_ranges),
88 TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
89 TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
90 tps65912_ldo_ranges),
91 TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
92 TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
93 tps65912_ldo_ranges),
94 TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
95 TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
96 tps65912_ldo_ranges),
97 TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
98 TPS65912_LDO5, TPS65912_LDO5,
99 tps65912_ldo_ranges),
100 TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
101 TPS65912_LDO6, TPS65912_LDO6,
102 tps65912_ldo_ranges),
103 TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
104 TPS65912_LDO7, TPS65912_LDO7,
105 tps65912_ldo_ranges),
106 TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
107 TPS65912_LDO8, TPS65912_LDO8,
108 tps65912_ldo_ranges),
109 TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
110 TPS65912_LDO9, TPS65912_LDO9,
111 tps65912_ldo_ranges),
112 TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
113 TPS65912_LDO10, TPS65912_LDO10,
114 tps65912_ldo_ranges),
115 };
116
tps65912_regulator_probe(struct platform_device * pdev)117 static int tps65912_regulator_probe(struct platform_device *pdev)
118 {
119 struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
120 struct regulator_config config = { };
121 struct regulator_dev *rdev;
122 int i;
123
124 platform_set_drvdata(pdev, tps);
125
126 config.dev = &pdev->dev;
127 config.driver_data = tps;
128 config.dev->of_node = tps->dev->of_node;
129 config.regmap = tps->regmap;
130
131 for (i = 0; i < ARRAY_SIZE(regulators); i++) {
132 rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
133 &config);
134 if (IS_ERR(rdev)) {
135 dev_err(tps->dev, "failed to register %s regulator\n",
136 pdev->name);
137 return PTR_ERR(rdev);
138 }
139 }
140
141 return 0;
142 }
143
144 static const struct platform_device_id tps65912_regulator_id_table[] = {
145 { "tps65912-regulator", },
146 { /* sentinel */ }
147 };
148 MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
149
150 static struct platform_driver tps65912_regulator_driver = {
151 .driver = {
152 .name = "tps65912-regulator",
153 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
154 },
155 .probe = tps65912_regulator_probe,
156 .id_table = tps65912_regulator_id_table,
157 };
158 module_platform_driver(tps65912_regulator_driver);
159
160 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
161 MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
162 MODULE_LICENSE("GPL v2");
163