Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
[linux-2.6-microblaze.git] / drivers / regulator / 88pg86x.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/module.h>
3 #include <linux/i2c.h>
4 #include <linux/of.h>
5 #include <linux/regulator/driver.h>
6 #include <linux/regmap.h>
7
8 static const struct regulator_ops pg86x_ops = {
9         .set_voltage_sel = regulator_set_voltage_sel_regmap,
10         .get_voltage_sel = regulator_get_voltage_sel_regmap,
11         .list_voltage = regulator_list_voltage_linear_range,
12 };
13
14 static const struct regulator_linear_range pg86x_buck1_ranges[] = {
15         REGULATOR_LINEAR_RANGE(      0,  0, 10,     0),
16         REGULATOR_LINEAR_RANGE(1000000, 11, 34, 25000),
17         REGULATOR_LINEAR_RANGE(1600000, 35, 47, 50000),
18 };
19
20 static const struct regulator_linear_range pg86x_buck2_ranges[] = {
21         REGULATOR_LINEAR_RANGE(      0,  0, 15,     0),
22         REGULATOR_LINEAR_RANGE(1000000, 16, 39, 25000),
23         REGULATOR_LINEAR_RANGE(1600000, 40, 52, 50000),
24 };
25
26 static const struct regulator_desc pg86x_regulators[] = {
27         {
28                 .id = 0,
29                 .type = REGULATOR_VOLTAGE,
30                 .name = "buck1",
31                 .of_match = of_match_ptr("buck1"),
32                 .n_voltages = 11 + 24 + 13,
33                 .linear_ranges = pg86x_buck1_ranges,
34                 .n_linear_ranges = 3,
35                 .vsel_reg  = 0x24,
36                 .vsel_mask = 0xff,
37                 .ops = &pg86x_ops,
38                 .owner = THIS_MODULE
39         },
40         {
41                 .id = 1,
42                 .type = REGULATOR_VOLTAGE,
43                 .name = "buck2",
44                 .of_match = of_match_ptr("buck2"),
45                 .n_voltages = 16 + 24 + 13,
46                 .linear_ranges = pg86x_buck2_ranges,
47                 .n_linear_ranges = 3,
48                 .vsel_reg  = 0x13,
49                 .vsel_mask = 0xff,
50                 .ops = &pg86x_ops,
51                 .owner = THIS_MODULE
52         },
53 };
54
55 static const struct regmap_config pg86x_regmap = {
56         .reg_bits = 8,
57         .val_bits = 8,
58 };
59
60 static int pg86x_i2c_probe(struct i2c_client *i2c)
61 {
62         int id, ret;
63         struct regulator_config config = {.dev = &i2c->dev};
64         struct regmap *regmap = devm_regmap_init_i2c(i2c, &pg86x_regmap);
65
66         if (IS_ERR(regmap)) {
67                 ret = PTR_ERR(regmap);
68                 dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
69                 return ret;
70         }
71
72         for (id = 0; id < ARRAY_SIZE(pg86x_regulators); id++) {
73                 struct regulator_dev *rdev;
74                 rdev = devm_regulator_register(&i2c->dev,
75                                                &pg86x_regulators[id],
76                                                &config);
77                 if (IS_ERR(rdev)) {
78                         ret = PTR_ERR(rdev);
79                         dev_err(&i2c->dev, "failed to register %s: %d\n",
80                                 pg86x_regulators[id].name, ret);
81                         return ret;
82                 }
83         }
84         return 0;
85 }
86
87 static const struct of_device_id pg86x_dt_ids [] = {
88         { .compatible = "marvell,88pg867" },
89         { .compatible = "marvell,88pg868" },
90         { }
91 };
92 MODULE_DEVICE_TABLE(of, pg86x_dt_ids);
93
94 static const struct i2c_device_id pg86x_i2c_id[] = {
95         { "88pg867", },
96         { "88pg868", },
97         { }
98 };
99 MODULE_DEVICE_TABLE(i2c, pg86x_i2c_id);
100
101 static struct i2c_driver pg86x_regulator_driver = {
102         .driver = {
103                 .name = "88pg86x",
104                 .of_match_table = of_match_ptr(pg86x_dt_ids),
105         },
106         .probe_new = pg86x_i2c_probe,
107         .id_table = pg86x_i2c_id,
108 };
109
110 module_i2c_driver(pg86x_regulator_driver);
111
112 MODULE_DESCRIPTION("Marvell 88PG86X voltage regulator");
113 MODULE_AUTHOR("Alexander Monakov <amonakov@gmail.com>");
114 MODULE_LICENSE("GPL");