Mark Brown | 34abbd6 | 2010-02-12 10:18:08 +0000 | [diff] [blame] | 1 | /* |
| 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 | |
| 25 | struct regulator_dev *dummy_regulator_rdev; |
| 26 | |
| 27 | static struct regulator_init_data dummy_initdata; |
| 28 | |
| 29 | static struct regulator_ops dummy_ops; |
| 30 | |
| 31 | static 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 | |
Mark Brown | c08957a | 2011-06-07 23:36:18 +0100 | [diff] [blame] | 39 | static int __devinit dummy_regulator_probe(struct platform_device *pdev) |
| 40 | { |
| 41 | int ret; |
| 42 | |
| 43 | dummy_regulator_rdev = regulator_register(&dummy_desc, NULL, |
| 44 | &dummy_initdata, NULL); |
| 45 | if (IS_ERR(dummy_regulator_rdev)) { |
| 46 | ret = PTR_ERR(dummy_regulator_rdev); |
| 47 | pr_err("Failed to register regulator: %d\n", ret); |
| 48 | return ret; |
| 49 | } |
| 50 | |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | static struct platform_driver dummy_regulator_driver = { |
| 55 | .probe = dummy_regulator_probe, |
| 56 | .driver = { |
| 57 | .name = "reg-dummy", |
| 58 | .owner = THIS_MODULE, |
| 59 | }, |
| 60 | }; |
| 61 | |
Mark Brown | 34abbd6 | 2010-02-12 10:18:08 +0000 | [diff] [blame] | 62 | static struct platform_device *dummy_pdev; |
| 63 | |
| 64 | void __init regulator_dummy_init(void) |
| 65 | { |
| 66 | int ret; |
| 67 | |
| 68 | dummy_pdev = platform_device_alloc("reg-dummy", -1); |
| 69 | if (!dummy_pdev) { |
| 70 | pr_err("Failed to allocate dummy regulator device\n"); |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | ret = platform_device_add(dummy_pdev); |
| 75 | if (ret != 0) { |
| 76 | pr_err("Failed to register dummy regulator device: %d\n", ret); |
| 77 | platform_device_put(dummy_pdev); |
| 78 | return; |
| 79 | } |
| 80 | |
Mark Brown | c08957a | 2011-06-07 23:36:18 +0100 | [diff] [blame] | 81 | ret = platform_driver_register(&dummy_regulator_driver); |
| 82 | if (ret != 0) { |
| 83 | pr_err("Failed to register dummy regulator driver: %d\n", ret); |
Mark Brown | 34abbd6 | 2010-02-12 10:18:08 +0000 | [diff] [blame] | 84 | platform_device_unregister(dummy_pdev); |
Mark Brown | 34abbd6 | 2010-02-12 10:18:08 +0000 | [diff] [blame] | 85 | } |
| 86 | } |