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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/regulator/dummy.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | drivers/regulator/dummy.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/drivers/regulator/dummy.c b/drivers/regulator/dummy.c new file mode 100644 index 000000000..24e586f93 --- /dev/null +++ b/drivers/regulator/dummy.c @@ -0,0 +1,90 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * dummy.c + * + * Copyright 2010 Wolfson Microelectronics PLC. + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * This is useful for systems with mixed controllable and + * non-controllable regulators, as well as for allowing testing on + * systems with no controllable regulators. + */ + +#include <linux/err.h> +#include <linux/export.h> +#include <linux/platform_device.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> + +#include "dummy.h" + +struct regulator_dev *dummy_regulator_rdev; + +static const struct regulator_init_data dummy_initdata = { + .constraints = { + .always_on = 1, + }, +}; + +static const struct regulator_ops dummy_ops; + +static const struct regulator_desc dummy_desc = { + .name = "regulator-dummy", + .id = -1, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .ops = &dummy_ops, +}; + +static int dummy_regulator_probe(struct platform_device *pdev) +{ + struct regulator_config config = { }; + int ret; + + config.dev = &pdev->dev; + config.init_data = &dummy_initdata; + + dummy_regulator_rdev = devm_regulator_register(&pdev->dev, &dummy_desc, + &config); + if (IS_ERR(dummy_regulator_rdev)) { + ret = PTR_ERR(dummy_regulator_rdev); + pr_err("Failed to register regulator: %d\n", ret); + return ret; + } + + return 0; +} + +static struct platform_driver dummy_regulator_driver = { + .probe = dummy_regulator_probe, + .driver = { + .name = "reg-dummy", + }, +}; + +static struct platform_device *dummy_pdev; + +void __init regulator_dummy_init(void) +{ + int ret; + + dummy_pdev = platform_device_alloc("reg-dummy", -1); + if (!dummy_pdev) { + pr_err("Failed to allocate dummy regulator device\n"); + return; + } + + ret = platform_device_add(dummy_pdev); + if (ret != 0) { + pr_err("Failed to register dummy regulator device: %d\n", ret); + platform_device_put(dummy_pdev); + return; + } + + ret = platform_driver_register(&dummy_regulator_driver); + if (ret != 0) { + pr_err("Failed to register dummy regulator driver: %d\n", ret); + platform_device_unregister(dummy_pdev); + } +} |