]> git.karo-electronics.de Git - karo-tx-linux.git/blob - drivers/regulator/tps6105x-regulator.c
Merge branch 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
[karo-tx-linux.git] / drivers / regulator / tps6105x-regulator.c
1 /*
2  * Driver for TPS61050/61052 boost converters, typically used for white LEDs
3  * or audio amplifiers.
4  *
5  * Copyright (C) 2011 ST-Ericsson SA
6  * Written on behalf of Linaro for ST-Ericsson
7  *
8  * Author: Linus Walleij <linus.walleij@linaro.org>
9  *
10  * License terms: GNU General Public License (GPL) version 2
11  */
12
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/err.h>
17 #include <linux/regmap.h>
18 #include <linux/platform_device.h>
19 #include <linux/regulator/driver.h>
20 #include <linux/mfd/core.h>
21 #include <linux/mfd/tps6105x.h>
22
23 static const unsigned int tps6105x_voltages[] = {
24         4500000,
25         5000000,
26         5250000,
27         5000000, /* There is an additional 5V */
28 };
29
30 static struct regulator_ops tps6105x_regulator_ops = {
31         .enable         = regulator_enable_regmap,
32         .disable        = regulator_disable_regmap,
33         .is_enabled     = regulator_is_enabled_regmap,
34         .get_voltage_sel = regulator_get_voltage_sel_regmap,
35         .set_voltage_sel = regulator_set_voltage_sel_regmap,
36         .list_voltage   = regulator_list_voltage_table,
37 };
38
39 static const struct regulator_desc tps6105x_regulator_desc = {
40         .name           = "tps6105x-boost",
41         .ops            = &tps6105x_regulator_ops,
42         .type           = REGULATOR_VOLTAGE,
43         .id             = 0,
44         .owner          = THIS_MODULE,
45         .n_voltages     = ARRAY_SIZE(tps6105x_voltages),
46         .volt_table     = tps6105x_voltages,
47         .vsel_reg       = TPS6105X_REG_0,
48         .vsel_mask      = TPS6105X_REG0_VOLTAGE_MASK,
49         .enable_reg     = TPS6105X_REG_0,
50         .enable_mask    = TPS6105X_REG0_MODE_MASK,
51         .enable_val     = TPS6105X_REG0_MODE_VOLTAGE <<
52                           TPS6105X_REG0_MODE_SHIFT,
53 };
54
55 /*
56  * Registers the chip as a voltage regulator
57  */
58 static int tps6105x_regulator_probe(struct platform_device *pdev)
59 {
60         struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev);
61         struct tps6105x_platform_data *pdata = tps6105x->pdata;
62         struct regulator_config config = { };
63         int ret;
64
65         /* This instance is not set for regulator mode so bail out */
66         if (pdata->mode != TPS6105X_MODE_VOLTAGE) {
67                 dev_info(&pdev->dev,
68                         "chip not in voltage mode mode, exit probe\n");
69                 return 0;
70         }
71
72         config.dev = &tps6105x->client->dev;
73         config.init_data = pdata->regulator_data;
74         config.driver_data = tps6105x;
75         config.regmap = tps6105x->regmap;
76
77         /* Register regulator with framework */
78         tps6105x->regulator = devm_regulator_register(&pdev->dev,
79                                                       &tps6105x_regulator_desc,
80                                                       &config);
81         if (IS_ERR(tps6105x->regulator)) {
82                 ret = PTR_ERR(tps6105x->regulator);
83                 dev_err(&tps6105x->client->dev,
84                         "failed to register regulator\n");
85                 return ret;
86         }
87         platform_set_drvdata(pdev, tps6105x);
88
89         return 0;
90 }
91
92 static struct platform_driver tps6105x_regulator_driver = {
93         .driver = {
94                 .name  = "tps6105x-regulator",
95         },
96         .probe = tps6105x_regulator_probe,
97 };
98
99 static __init int tps6105x_regulator_init(void)
100 {
101         return platform_driver_register(&tps6105x_regulator_driver);
102 }
103 subsys_initcall(tps6105x_regulator_init);
104
105 static __exit void tps6105x_regulator_exit(void)
106 {
107         platform_driver_unregister(&tps6105x_regulator_driver);
108 }
109 module_exit(tps6105x_regulator_exit);
110
111 MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
112 MODULE_DESCRIPTION("TPS6105x regulator driver");
113 MODULE_LICENSE("GPL v2");
114 MODULE_ALIAS("platform:tps6105x-regulator");