1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2015 Samsung Electronics
4 *
5 * Przemyslaw Marczak <p.marczak@samsung.com>
6 */
7
8 #include <common.h>
9 #include <errno.h>
10 #include <dm.h>
11 #include <log.h>
12 #include <power/pmic.h>
13 #include <power/regulator.h>
14
15 #include "regulator_common.h"
16
fixed_regulator_of_to_plat(struct udevice * dev)17 static int fixed_regulator_of_to_plat(struct udevice *dev)
18 {
19 struct dm_regulator_uclass_plat *uc_pdata;
20 struct regulator_common_plat *dev_pdata;
21
22 dev_pdata = dev_get_plat(dev);
23 uc_pdata = dev_get_uclass_plat(dev);
24 if (!uc_pdata)
25 return -ENXIO;
26
27 uc_pdata->type = REGULATOR_TYPE_FIXED;
28
29 return regulator_common_of_to_plat(dev, dev_pdata, "gpio");
30 }
31
fixed_regulator_get_value(struct udevice * dev)32 static int fixed_regulator_get_value(struct udevice *dev)
33 {
34 struct dm_regulator_uclass_plat *uc_pdata;
35
36 uc_pdata = dev_get_uclass_plat(dev);
37 if (!uc_pdata)
38 return -ENXIO;
39
40 if (uc_pdata->min_uV != uc_pdata->max_uV) {
41 debug("Invalid constraints for: %s\n", uc_pdata->name);
42 return -EINVAL;
43 }
44
45 return uc_pdata->min_uV;
46 }
47
fixed_regulator_get_current(struct udevice * dev)48 static int fixed_regulator_get_current(struct udevice *dev)
49 {
50 struct dm_regulator_uclass_plat *uc_pdata;
51
52 uc_pdata = dev_get_uclass_plat(dev);
53 if (!uc_pdata)
54 return -ENXIO;
55
56 if (uc_pdata->min_uA != uc_pdata->max_uA) {
57 debug("Invalid constraints for: %s\n", uc_pdata->name);
58 return -EINVAL;
59 }
60
61 return uc_pdata->min_uA;
62 }
63
fixed_regulator_get_enable(struct udevice * dev)64 static int fixed_regulator_get_enable(struct udevice *dev)
65 {
66 return regulator_common_get_enable(dev, dev_get_plat(dev));
67 }
68
fixed_regulator_set_enable(struct udevice * dev,bool enable)69 static int fixed_regulator_set_enable(struct udevice *dev, bool enable)
70 {
71 return regulator_common_set_enable(dev, dev_get_plat(dev), enable);
72 }
73
74 static const struct dm_regulator_ops fixed_regulator_ops = {
75 .get_value = fixed_regulator_get_value,
76 .get_current = fixed_regulator_get_current,
77 .get_enable = fixed_regulator_get_enable,
78 .set_enable = fixed_regulator_set_enable,
79 };
80
81 static const struct udevice_id fixed_regulator_ids[] = {
82 { .compatible = "regulator-fixed" },
83 { },
84 };
85
86 U_BOOT_DRIVER(regulator_fixed) = {
87 .name = "regulator_fixed",
88 .id = UCLASS_REGULATOR,
89 .ops = &fixed_regulator_ops,
90 .of_match = fixed_regulator_ids,
91 .of_to_plat = fixed_regulator_of_to_plat,
92 .plat_auto = sizeof(struct regulator_common_plat),
93 };
94