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
19enum 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
41static const struct linear_range tps65912_dcdc_ranges[] = {
42	REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
43};
44
45static 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 */
52static 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 */
62static 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
72static 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
117static 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
144static const struct platform_device_id tps65912_regulator_id_table[] = {
145	{ "tps65912-regulator", },
146	{ /* sentinel */ }
147};
148MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
149
150static 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};
158module_platform_driver(tps65912_regulator_driver);
159
160MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
161MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
162MODULE_LICENSE("GPL v2");
163