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| 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/export.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/regulator/driver.h> |
| 22 | #include <linux/regulator/machine.h> |
| 23 | |
| 24 | #include "dummy.h" |
| 25 | |
| 26 | struct regulator_dev *dummy_regulator_rdev; |
| 27 | |
| 28 | static struct regulator_init_data dummy_initdata; |
| 29 | |
| 30 | static struct regulator_ops dummy_ops; |
| 31 | |
| 32 | static struct regulator_desc dummy_desc = { |
| 33 | .name = "dummy", |
| 34 | .id = -1, |
| 35 | .type = REGULATOR_VOLTAGE, |
| 36 | .owner = THIS_MODULE, |
| 37 | .ops = &dummy_ops, |
| 38 | }; |
| 39 | |
| 40 | static int __devinit dummy_regulator_probe(struct platform_device *pdev) |
| 41 | { |
| 42 | struct regulator_config config = { }; |
| 43 | int ret; |
| 44 | |
| 45 | config.dev = &pdev->dev; |
| 46 | config.init_data = &dummy_initdata; |
| 47 | |
| 48 | dummy_regulator_rdev = regulator_register(&dummy_desc, &config); |
| 49 | if (IS_ERR(dummy_regulator_rdev)) { |
| 50 | ret = PTR_ERR(dummy_regulator_rdev); |
| 51 | pr_err("Failed to register regulator: %d\n", ret); |
| 52 | return ret; |
| 53 | } |
| 54 | |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static struct platform_driver dummy_regulator_driver = { |
| 59 | .probe = dummy_regulator_probe, |
| 60 | .driver = { |
| 61 | .name = "reg-dummy", |
| 62 | .owner = THIS_MODULE, |
| 63 | }, |
| 64 | }; |
| 65 | |
| 66 | static struct platform_device *dummy_pdev; |
| 67 | |
| 68 | void __init regulator_dummy_init(void) |
| 69 | { |
| 70 | int ret; |
| 71 | |
| 72 | dummy_pdev = platform_device_alloc("reg-dummy", -1); |
| 73 | if (!dummy_pdev) { |
| 74 | pr_err("Failed to allocate dummy regulator device\n"); |
| 75 | return; |
| 76 | } |
| 77 | |
| 78 | ret = platform_device_add(dummy_pdev); |
| 79 | if (ret != 0) { |
| 80 | pr_err("Failed to register dummy regulator device: %d\n", ret); |
| 81 | platform_device_put(dummy_pdev); |
| 82 | return; |
| 83 | } |
| 84 | |
| 85 | ret = platform_driver_register(&dummy_regulator_driver); |
| 86 | if (ret != 0) { |
| 87 | pr_err("Failed to register dummy regulator driver: %d\n", ret); |
| 88 | platform_device_unregister(dummy_pdev); |
| 89 | } |
| 90 | } |
| 91 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9
