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The dummy regulator driver does not need to create a platform device, it only did so because it was simple to do. Change it over to use the faux bus instead as this is NOT a real platform device, and it makes the code even smaller than before. Reviewed-by: Mark Brown <broonie@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/2025021027-outclass-stress-59dd@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* dummy.c
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*
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* Copyright 2010 Wolfson Microelectronics PLC.
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*
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* This is useful for systems with mixed controllable and
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* non-controllable regulators, as well as for allowing testing on
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* systems with no controllable regulators.
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*/
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#include <linux/err.h>
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#include <linux/export.h>
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#include <linux/device/faux.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include "dummy.h"
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struct regulator_dev *dummy_regulator_rdev;
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static const struct regulator_init_data dummy_initdata = {
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.constraints = {
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.always_on = 1,
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},
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};
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static const struct regulator_ops dummy_ops;
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static const struct regulator_desc dummy_desc = {
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.name = "regulator-dummy",
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.id = -1,
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.type = REGULATOR_VOLTAGE,
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.owner = THIS_MODULE,
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.ops = &dummy_ops,
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};
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static int dummy_regulator_probe(struct faux_device *fdev)
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{
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struct regulator_config config = { };
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int ret;
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config.dev = &fdev->dev;
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config.init_data = &dummy_initdata;
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dummy_regulator_rdev = devm_regulator_register(&fdev->dev, &dummy_desc,
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&config);
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if (IS_ERR(dummy_regulator_rdev)) {
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ret = PTR_ERR(dummy_regulator_rdev);
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pr_err("Failed to register regulator: %d\n", ret);
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return ret;
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}
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return 0;
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}
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struct faux_device_ops dummy_regulator_driver = {
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.probe = dummy_regulator_probe,
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};
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static struct faux_device *dummy_fdev;
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void __init regulator_dummy_init(void)
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{
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dummy_fdev = faux_device_create("reg-dummy", NULL, &dummy_regulator_driver);
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if (!dummy_fdev) {
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pr_err("Failed to allocate dummy regulator device\n");
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return;
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}
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}
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