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1 | /* |
2 | * Regulator driver for TI TPS65912x PMICs | |
3 | * | |
4 | * Copyright (C) 2015 Texas Instruments Incorporated - http://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/platform_device.h> | |
22 | #include <linux/regulator/driver.h> | |
23 | ||
24 | #include <linux/mfd/tps65912.h> | |
25 | ||
26 | enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3, | |
27 | LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 }; | |
28 | ||
29 | #define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr) \ | |
30 | [_id] = { \ | |
31 | .name = _name, \ | |
32 | .of_match = _of_match, \ | |
33 | .regulators_node = "regulators", \ | |
34 | .id = _id, \ | |
35 | .ops = &_ops, \ | |
36 | .n_voltages = 64, \ | |
37 | .type = REGULATOR_VOLTAGE, \ | |
38 | .owner = THIS_MODULE, \ | |
39 | .vsel_reg = _vr, \ | |
40 | .vsel_mask = 0x3f, \ | |
41 | .enable_reg = _er, \ | |
42 | .enable_mask = BIT(7), \ | |
43 | .volt_table = NULL, \ | |
44 | .linear_ranges = _lr, \ | |
45 | .n_linear_ranges = ARRAY_SIZE(_lr), \ | |
46 | } | |
47 | ||
48 | static const struct regulator_linear_range tps65912_dcdc_ranges[] = { | |
49 | REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000), | |
50 | }; | |
51 | ||
52 | static const struct regulator_linear_range tps65912_ldo_ranges[] = { | |
53 | REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000), | |
54 | REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000), | |
55 | REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000), | |
56 | }; | |
57 | ||
58 | /* Operations permitted on DCDCx */ | |
59 | static struct regulator_ops tps65912_ops_dcdc = { | |
60 | .is_enabled = regulator_is_enabled_regmap, | |
61 | .enable = regulator_enable_regmap, | |
62 | .disable = regulator_disable_regmap, | |
63 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
64 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
65 | .list_voltage = regulator_list_voltage_linear_range, | |
66 | }; | |
67 | ||
68 | /* Operations permitted on LDOx */ | |
69 | static struct regulator_ops tps65912_ops_ldo = { | |
70 | .is_enabled = regulator_is_enabled_regmap, | |
71 | .enable = regulator_enable_regmap, | |
72 | .disable = regulator_disable_regmap, | |
73 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
74 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
75 | .list_voltage = regulator_list_voltage_linear_range, | |
76 | .map_voltage = regulator_map_voltage_linear_range, | |
77 | }; | |
78 | ||
79 | static const struct regulator_desc regulators[] = { | |
80 | TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc, | |
81 | TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL, | |
82 | tps65912_dcdc_ranges), | |
83 | TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc, | |
84 | TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL, | |
85 | tps65912_dcdc_ranges), | |
86 | TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc, | |
87 | TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL, | |
88 | tps65912_dcdc_ranges), | |
89 | TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc, | |
90 | TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL, | |
91 | tps65912_dcdc_ranges), | |
92 | TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo, | |
93 | TPS65912_LDO1_OP, TPS65912_LDO1_AVS, | |
94 | tps65912_ldo_ranges), | |
95 | TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo, | |
96 | TPS65912_LDO2_OP, TPS65912_LDO2_AVS, | |
97 | tps65912_ldo_ranges), | |
98 | TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo, | |
99 | TPS65912_LDO3_OP, TPS65912_LDO3_AVS, | |
100 | tps65912_ldo_ranges), | |
101 | TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo, | |
102 | TPS65912_LDO4_OP, TPS65912_LDO4_AVS, | |
103 | tps65912_ldo_ranges), | |
104 | TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo, | |
105 | TPS65912_LDO5, TPS65912_LDO5, | |
106 | tps65912_ldo_ranges), | |
107 | TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo, | |
108 | TPS65912_LDO6, TPS65912_LDO6, | |
109 | tps65912_ldo_ranges), | |
110 | TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo, | |
111 | TPS65912_LDO7, TPS65912_LDO7, | |
112 | tps65912_ldo_ranges), | |
113 | TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo, | |
114 | TPS65912_LDO8, TPS65912_LDO8, | |
115 | tps65912_ldo_ranges), | |
116 | TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo, | |
117 | TPS65912_LDO9, TPS65912_LDO9, | |
118 | tps65912_ldo_ranges), | |
119 | TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo, | |
120 | TPS65912_LDO10, TPS65912_LDO10, | |
121 | tps65912_ldo_ranges), | |
122 | }; | |
123 | ||
124 | static int tps65912_regulator_probe(struct platform_device *pdev) | |
125 | { | |
126 | struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent); | |
127 | struct regulator_config config = { }; | |
128 | struct regulator_dev *rdev; | |
129 | int i; | |
130 | ||
131 | platform_set_drvdata(pdev, tps); | |
132 | ||
133 | config.dev = &pdev->dev; | |
134 | config.driver_data = tps; | |
135 | config.dev->of_node = tps->dev->of_node; | |
136 | config.regmap = tps->regmap; | |
137 | ||
138 | for (i = 0; i < ARRAY_SIZE(regulators); i++) { | |
139 | rdev = devm_regulator_register(&pdev->dev, ®ulators[i], | |
140 | &config); | |
141 | if (IS_ERR(rdev)) { | |
142 | dev_err(tps->dev, "failed to register %s regulator\n", | |
143 | pdev->name); | |
144 | return PTR_ERR(rdev); | |
145 | } | |
146 | } | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
151 | static const struct platform_device_id tps65912_regulator_id_table[] = { | |
152 | { "tps65912-regulator", }, | |
153 | { /* sentinel */ } | |
154 | }; | |
155 | MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table); | |
156 | ||
157 | static struct platform_driver tps65912_regulator_driver = { | |
158 | .driver = { | |
159 | .name = "tps65912-regulator", | |
160 | }, | |
161 | .probe = tps65912_regulator_probe, | |
162 | .id_table = tps65912_regulator_id_table, | |
163 | }; | |
164 | module_platform_driver(tps65912_regulator_driver); | |
165 | ||
166 | MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>"); | |
167 | MODULE_DESCRIPTION("TPS65912 voltage regulator driver"); | |
168 | MODULE_LICENSE("GPL v2"); |