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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
// SPDX-License-Identifier: GPL-2.0+
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
enum fan53880_regulator_ids {
FAN53880_LDO1,
FAN53880_LDO2,
FAN53880_LDO3,
FAN53880_LDO4,
FAN53880_BUCK,
FAN53880_BOOST,
};
enum fan53880_registers {
FAN53880_PRODUCT_ID = 0x00,
FAN53880_SILICON_REV,
FAN53880_BUCKVOUT,
FAN53880_BOOSTVOUT,
FAN53880_LDO1VOUT,
FAN53880_LDO2VOUT,
FAN53880_LDO3VOUT,
FAN53880_LDO4VOUT,
FAN53880_IOUT,
FAN53880_ENABLE,
FAN53880_ENABLE_BOOST,
};
#define FAN53880_ID 0x01
static const struct regulator_ops fan53880_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
#define FAN53880_LDO(_num, _supply, _default) \
[FAN53880_LDO ## _num] = { \
.name = "LDO"#_num, \
.of_match = of_match_ptr("LDO"#_num), \
.regulators_node = of_match_ptr("regulators"), \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
.linear_ranges = (struct linear_range[]) { \
REGULATOR_LINEAR_RANGE(_default, 0x0, 0x0, 0), \
REGULATOR_LINEAR_RANGE(800000, 0xf, 0x73, 25000), \
}, \
.n_linear_ranges = 2, \
.n_voltages = 0x74, \
.vsel_reg = FAN53880_LDO ## _num ## VOUT, \
.vsel_mask = 0x7f, \
.enable_reg = FAN53880_ENABLE, \
.enable_mask = BIT(_num - 1), \
.enable_time = 150, \
.supply_name = _supply, \
.ops = &fan53880_ops, \
}
static const struct regulator_desc fan53880_regulators[] = {
FAN53880_LDO(1, "VIN12", 2800000),
FAN53880_LDO(2, "VIN12", 2800000),
FAN53880_LDO(3, "VIN3", 1800000),
FAN53880_LDO(4, "VIN4", 1800000),
[FAN53880_BUCK] = {
.name = "BUCK",
.of_match = of_match_ptr("BUCK"),
.regulators_node = of_match_ptr("regulators"),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.linear_ranges = (struct linear_range[]) {
REGULATOR_LINEAR_RANGE(1100000, 0x0, 0x0, 0),
REGULATOR_LINEAR_RANGE(600000, 0x1f, 0xf7, 12500),
},
.n_linear_ranges = 2,
.n_voltages = 0xf8,
.vsel_reg = FAN53880_BUCKVOUT,
.vsel_mask = 0xff,
.enable_reg = FAN53880_ENABLE,
.enable_mask = 0x10,
.enable_time = 480,
.supply_name = "PVIN",
.ops = &fan53880_ops,
},
[FAN53880_BOOST] = {
.name = "BOOST",
.of_match = of_match_ptr("BOOST"),
.regulators_node = of_match_ptr("regulators"),
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
.linear_ranges = (struct linear_range[]) {
REGULATOR_LINEAR_RANGE(5000000, 0x0, 0x0, 0),
REGULATOR_LINEAR_RANGE(3000000, 0x4, 0x70, 25000),
},
.n_linear_ranges = 2,
.n_voltages = 0x71,
.vsel_reg = FAN53880_BOOSTVOUT,
.vsel_mask = 0x7f,
.enable_reg = FAN53880_ENABLE_BOOST,
.enable_mask = 0xff,
.enable_time = 580,
.supply_name = "PVIN",
.ops = &fan53880_ops,
},
};
static const struct regmap_config fan53880_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = FAN53880_ENABLE_BOOST,
};
static int fan53880_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct regulator_config config = { };
struct regulator_dev *rdev;
struct regmap *regmap;
int i, ret;
unsigned int data;
regmap = devm_regmap_init_i2c(i2c, &fan53880_regmap);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
return ret;
}
ret = regmap_read(regmap, FAN53880_PRODUCT_ID, &data);
if (ret < 0) {
dev_err(&i2c->dev, "Failed to read PRODUCT_ID: %d\n", ret);
return ret;
}
if (data != FAN53880_ID) {
dev_err(&i2c->dev, "Unsupported device id: 0x%x.\n", data);
return -ENODEV;
}
config.dev = &i2c->dev;
config.init_data = NULL;
for (i = 0; i < ARRAY_SIZE(fan53880_regulators); i++) {
rdev = devm_regulator_register(&i2c->dev,
&fan53880_regulators[i],
&config);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(&i2c->dev, "Failed to register %s: %d\n",
fan53880_regulators[i].name, ret);
return ret;
}
}
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id fan53880_dt_ids[] = {
{ .compatible = "onnn,fan53880", },
{}
};
MODULE_DEVICE_TABLE(of, fan53880_dt_ids);
#endif
static const struct i2c_device_id fan53880_i2c_id[] = {
{ "fan53880", },
{}
};
MODULE_DEVICE_TABLE(i2c, fan53880_i2c_id);
static struct i2c_driver fan53880_regulator_driver = {
.driver = {
.name = "fan53880",
.of_match_table = of_match_ptr(fan53880_dt_ids),
},
.probe = fan53880_i2c_probe,
.id_table = fan53880_i2c_id,
};
module_i2c_driver(fan53880_regulator_driver);
MODULE_DESCRIPTION("FAN53880 PMIC voltage regulator driver");
MODULE_AUTHOR("Christoph Fritz <chf.fritz@googlemail.com>");
MODULE_LICENSE("GPL");
|
