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89 lines
2.0 KiB
89 lines
2.0 KiB
// 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 <[email protected]> |
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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/platform_device.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 platform_device *pdev) |
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{ |
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struct regulator_config config = { }; |
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int ret; |
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config.dev = &pdev->dev; |
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config.init_data = &dummy_initdata; |
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dummy_regulator_rdev = regulator_register(&dummy_desc, &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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static struct platform_driver dummy_regulator_driver = { |
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.probe = dummy_regulator_probe, |
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.driver = { |
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.name = "reg-dummy", |
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}, |
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}; |
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static struct platform_device *dummy_pdev; |
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void __init regulator_dummy_init(void) |
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{ |
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int ret; |
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dummy_pdev = platform_device_alloc("reg-dummy", -1); |
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if (!dummy_pdev) { |
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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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ret = platform_device_add(dummy_pdev); |
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if (ret != 0) { |
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pr_err("Failed to register dummy regulator device: %d\n", ret); |
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platform_device_put(dummy_pdev); |
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return; |
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} |
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ret = platform_driver_register(&dummy_regulator_driver); |
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if (ret != 0) { |
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pr_err("Failed to register dummy regulator driver: %d\n", ret); |
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platform_device_unregister(dummy_pdev); |
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} |
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}
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