summaryrefslogtreecommitdiffstats
path: root/drivers/regulator/tps65912-regulator.c
blob: 15c79931ea89b215f96489bbc81122eebc5cf8f0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
/*
 * Regulator driver for TI TPS65912x PMICs
 *
 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
 *	Andrew F. Davis <afd@ti.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether expressed or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License version 2 for more details.
 *
 * Based on the TPS65218 driver and the previous TPS65912 driver by
 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
 */

#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>

#include <linux/mfd/tps65912.h>

enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
	LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };

#define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr)	\
	[_id] = {							\
		.name			= _name,			\
		.of_match		= _of_match,			\
		.regulators_node	= "regulators",			\
		.id			= _id,				\
		.ops			= &_ops,			\
		.n_voltages		= 64,				\
		.type			= REGULATOR_VOLTAGE,		\
		.owner			= THIS_MODULE,			\
		.vsel_reg		= _vr,				\
		.vsel_mask		= 0x3f,				\
		.enable_reg		= _er,				\
		.enable_mask		= BIT(7),			\
		.volt_table		= NULL,				\
		.linear_ranges		= _lr,				\
		.n_linear_ranges	= ARRAY_SIZE(_lr),		\
	}

static const struct linear_range tps65912_dcdc_ranges[] = {
	REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
};

static const struct linear_range tps65912_ldo_ranges[] = {
	REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
	REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
	REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
};

/* Operations permitted on DCDCx */
static struct regulator_ops tps65912_ops_dcdc = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
};

/* Operations permitted on LDOx */
static struct regulator_ops tps65912_ops_ldo = {
	.is_enabled		= regulator_is_enabled_regmap,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.map_voltage		= regulator_map_voltage_linear_range,
};

static const struct regulator_desc regulators[] = {
	TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
			   TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
			   tps65912_dcdc_ranges),
	TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
			   TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
			   tps65912_dcdc_ranges),
	TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
			   TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
			   tps65912_dcdc_ranges),
	TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
			   TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
			   tps65912_dcdc_ranges),
	TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
			   TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
			   TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
			   TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
			   TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
			   TPS65912_LDO5, TPS65912_LDO5,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
			   TPS65912_LDO6, TPS65912_LDO6,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
			   TPS65912_LDO7, TPS65912_LDO7,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
			   TPS65912_LDO8, TPS65912_LDO8,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
			   TPS65912_LDO9, TPS65912_LDO9,
			   tps65912_ldo_ranges),
	TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
			   TPS65912_LDO10, TPS65912_LDO10,
			   tps65912_ldo_ranges),
};

static int tps65912_regulator_probe(struct platform_device *pdev)
{
	struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	int i;

	platform_set_drvdata(pdev, tps);

	config.dev = &pdev->dev;
	config.driver_data = tps;
	config.dev->of_node = tps->dev->of_node;
	config.regmap = tps->regmap;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(tps->dev, "failed to register %s regulator\n",
				pdev->name);
			return PTR_ERR(rdev);
		}
	}

	return 0;
}

static const struct platform_device_id tps65912_regulator_id_table[] = {
	{ "tps65912-regulator", },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);

static struct platform_driver tps65912_regulator_driver = {
	.driver = {
		.name = "tps65912-regulator",
	},
	.probe = tps65912_regulator_probe,
	.id_table = tps65912_regulator_id_table,
};
module_platform_driver(tps65912_regulator_driver);

MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
MODULE_LICENSE("GPL v2");