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
27enum 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
49static const struct linear_range tps65912_dcdc_ranges[] = {
50	REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
51};
52
53static 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 */
60static 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 */
70static 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
80static 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
125static 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, &regulators[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
152static const struct platform_device_id tps65912_regulator_id_table[] = {
153	{ "tps65912-regulator", },
154	{ /* sentinel */ }
155};
156MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);
157
158static 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};
165module_platform_driver(tps65912_regulator_driver);
166
167MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
168MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
169MODULE_LICENSE("GPL v2");
170