1 /*
2 * Regulator driver for TI TPS65912x PMICs
3 *
4 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
5 * Andrew F. Davis <afd@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
12 * kind, whether expressed or implied; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License version 2 for more details.
15 *
16 * Based on the TPS65218 driver and the previous TPS65912 driver by
17 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
18 */
19
20 #include <linux/module.h>
21 #include <linux/mod_devicetable.h>
22 #include <linux/platform_device.h>
23 #include <linux/regulator/driver.h>
24
25 #include <linux/mfd/tps65912.h>
26
27 enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
28 LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
29
30 #define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr) \
31 [_id] = { \
32 .name = _name, \
33 .of_match = _of_match, \
34 .regulators_node = "regulators", \
35 .id = _id, \
36 .ops = &_ops, \
37 .n_voltages = 64, \
38 .type = REGULATOR_VOLTAGE, \
39 .owner = THIS_MODULE, \
40 .vsel_reg = _vr, \
41 .vsel_mask = 0x3f, \
42 .enable_reg = _er, \
43 .enable_mask = BIT(7), \
44 .volt_table = NULL, \
45 .linear_ranges = _lr, \
46 .n_linear_ranges = ARRAY_SIZE(_lr), \
47 }
48
49 static const struct linear_range tps65912_dcdc_ranges[] = {
50 REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
51 };
52
53 static const struct linear_range tps65912_ldo_ranges[] = {
54 REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
55 REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
56 REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
57 };
58
59 /* Operations permitted on DCDCx */
60 static const struct regulator_ops tps65912_ops_dcdc = {
61 .is_enabled = regulator_is_enabled_regmap,
62 .enable = regulator_enable_regmap,
63 .disable = regulator_disable_regmap,
64 .get_voltage_sel = regulator_get_voltage_sel_regmap,
65 .set_voltage_sel = regulator_set_voltage_sel_regmap,
66 .list_voltage = regulator_list_voltage_linear_range,
67 };
68
69 /* Operations permitted on LDOx */
70 static const struct regulator_ops tps65912_ops_ldo = {
71 .is_enabled = regulator_is_enabled_regmap,
72 .enable = regulator_enable_regmap,
73 .disable = regulator_disable_regmap,
74 .get_voltage_sel = regulator_get_voltage_sel_regmap,
75 .set_voltage_sel = regulator_set_voltage_sel_regmap,
76 .list_voltage = regulator_list_voltage_linear_range,
77 .map_voltage = regulator_map_voltage_linear_range,
78 };
79
80 static const struct regulator_desc regulators[] = {
81 TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
82 TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
83 tps65912_dcdc_ranges),
84 TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
85 TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
86 tps65912_dcdc_ranges),
87 TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
88 TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
89 tps65912_dcdc_ranges),
90 TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
91 TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
92 tps65912_dcdc_ranges),
93 TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
94 TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
95 tps65912_ldo_ranges),
96 TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
97 TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
98 tps65912_ldo_ranges),
99 TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
100 TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
101 tps65912_ldo_ranges),
102 TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
103 TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
104 tps65912_ldo_ranges),
105 TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
106 TPS65912_LDO5, TPS65912_LDO5,
107 tps65912_ldo_ranges),
108 TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
109 TPS65912_LDO6, TPS65912_LDO6,
110 tps65912_ldo_ranges),
111 TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
112 TPS65912_LDO7, TPS65912_LDO7,
113 tps65912_ldo_ranges),
114 TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
115 TPS65912_LDO8, TPS65912_LDO8,
116 tps65912_ldo_ranges),
117 TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
118 TPS65912_LDO9, TPS65912_LDO9,
119 tps65912_ldo_ranges),
120 TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
121 TPS65912_LDO10, TPS65912_LDO10,
122 tps65912_ldo_ranges),
123 };
124
tps65912_regulator_probe(struct platform_device * pdev)125 static int tps65912_regulator_probe(struct platform_device *pdev)
126 {
127 struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
128 struct regulator_config config = { };
129 struct regulator_dev *rdev;
130 int i;
131
132 platform_set_drvdata(pdev, tps);
133
134 config.dev = &pdev->dev;
135 config.driver_data = tps;
136 config.dev->of_node = tps->dev->of_node;
137 config.regmap = tps->regmap;
138
139 for (i = 0; i < ARRAY_SIZE(regulators); i++) {
140 rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
141 &config);
142 if (IS_ERR(rdev)) {
143 dev_err(tps->dev, "failed to register %s regulator\n",
144 pdev->name);
145 return PTR_ERR(rdev);
146 }
147 }
148
149 return 0;
150 }
151
152 static const struct platform_device_id tps65912_regulator_id_table[] = {
153 { "tps65912-regulator", },
154 { /* sentinel */ }
155 };
156 MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
157
158 static struct platform_driver tps65912_regulator_driver = {
159 .driver = {
160 .name = "tps65912-regulator",
161 },
162 .probe = tps65912_regulator_probe,
163 .id_table = tps65912_regulator_id_table,
164 };
165 module_platform_driver(tps65912_regulator_driver);
166
167 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
168 MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
169 MODULE_LICENSE("GPL v2");
170