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, &regulators[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 	},
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