| 1 | |
| 2 | |
| 3 | * dummy.c
|
| 4 | *
|
| 5 | * Copyright 2010 Wolfson Microelectronics PLC.
|
| 6 | *
|
| 7 | * Author: Mark Brown <[email protected]>
|
| 8 | *
|
| 9 | * This is useful for systems with mixed controllable and
|
| 10 | * non-controllable regulators, as well as for allowing testing on
|
| 11 | * systems with no controllable regulators.
|
| 12 |
|
| 13 |
|
| 14 | #include <linux/err.h>
|
| 15 | #include <linux/export.h>
|
| 16 | #include <linux/device/faux.h>
|
| 17 | #include <linux/regulator/driver.h>
|
| 18 | #include <linux/regulator/machine.h>
|
| 19 |
|
| 20 | #include "dummy.h"
|
| 21 |
|
| 22 | struct regulator_dev *dummy_regulator_rdev;
|
| 23 |
|
| 24 | static const struct regulator_init_data dummy_initdata = {
|
| 25 | .constraints = {
|
| 26 | .always_on = 1,
|
| 27 | },
|
| 28 | };
|
| 29 |
|
| 30 | static const struct regulator_ops dummy_ops;
|
| 31 |
|
| 32 | static const struct regulator_desc dummy_desc = {
|
| 33 | .name = "regulator-dummy",
|
| 34 | .id = -1,
|
| 35 | .type = REGULATOR_VOLTAGE,
|
| 36 | .owner = THIS_MODULE,
|
| 37 | .ops = &dummy_ops,
|
| 38 | };
|
| 39 |
|
| 40 | static int dummy_regulator_probe(struct faux_device *fdev)
|
| 41 | {
|
| 42 | struct regulator_config config = { };
|
| 43 | int ret;
|
| 44 |
|
| 45 | config.dev = &fdev->dev;
|
| 46 | config.init_data = &dummy_initdata;
|
| 47 |
|
| 48 | dummy_regulator_rdev = devm_regulator_register(&fdev->dev, &dummy_desc,
|
| 49 | &config);
|
| 50 | if (IS_ERR(dummy_regulator_rdev)) {
|
| 51 | ret = PTR_ERR(dummy_regulator_rdev);
|
| 52 | pr_err("Failed to register regulator: %d\n", ret);
|
| 53 | return ret;
|
| 54 | }
|
| 55 |
|
| 56 | return 0;
|
| 57 | }
|
| 58 |
|
| 59 | static struct faux_device_ops dummy_regulator_driver = {
|
| 60 | .probe = dummy_regulator_probe,
|
| 61 | };
|
| 62 |
|
| 63 | static struct faux_device *dummy_fdev;
|
| 64 |
|
| 65 | void __init regulator_dummy_init(void)
|
| 66 | {
|
| 67 | dummy_fdev = faux_device_create("reg-dummy", NULL, &dummy_regulator_driver);
|
| 68 | if (!dummy_fdev) {
|
| 69 | pr_err("Failed to allocate dummy regulator device\n");
|
| 70 | return;
|
| 71 | }
|
| 72 | }
|