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