blob: c7410bde7b5d92ec128bbb79850c62e0e9495d87 [file] [log] [blame]
Mark Brown34abbd62010-02-12 10:18:08 +00001/*
2 * dummy.c
3 *
4 * Copyright 2010 Wolfson Microelectronics PLC.
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of the
11 * License, or (at your option) any later version.
12 *
13 * This is useful for systems with mixed controllable and
14 * non-controllable regulators, as well as for allowing testing on
15 * systems with no controllable regulators.
16 */
17
18#include <linux/err.h>
19#include <linux/platform_device.h>
20#include <linux/regulator/driver.h>
21#include <linux/regulator/machine.h>
22
23#include "dummy.h"
24
25struct regulator_dev *dummy_regulator_rdev;
26
27static struct regulator_init_data dummy_initdata;
28
29static struct regulator_ops dummy_ops;
30
31static struct regulator_desc dummy_desc = {
32 .name = "dummy",
33 .id = -1,
34 .type = REGULATOR_VOLTAGE,
35 .owner = THIS_MODULE,
36 .ops = &dummy_ops,
37};
38
39static struct platform_device *dummy_pdev;
40
41void __init regulator_dummy_init(void)
42{
43 int ret;
44
45 dummy_pdev = platform_device_alloc("reg-dummy", -1);
46 if (!dummy_pdev) {
47 pr_err("Failed to allocate dummy regulator device\n");
48 return;
49 }
50
51 ret = platform_device_add(dummy_pdev);
52 if (ret != 0) {
53 pr_err("Failed to register dummy regulator device: %d\n", ret);
54 platform_device_put(dummy_pdev);
55 return;
56 }
57
58 dummy_regulator_rdev = regulator_register(&dummy_desc, NULL,
59 &dummy_initdata, NULL);
60 if (IS_ERR(dummy_regulator_rdev)) {
61 ret = PTR_ERR(dummy_regulator_rdev);
62 pr_err("Failed to register regulator: %d\n", ret);
63 platform_device_unregister(dummy_pdev);
64 return;
65 }
66}