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62 lines
1.5 KiB
62 lines
1.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Power off by restarting and let u-boot keep hold of the machine |
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* until the user presses a button for example. |
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* |
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* Andrew Lunn <[email protected]> |
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* |
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* Copyright (C) 2012 Andrew Lunn |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/platform_device.h> |
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#include <linux/of_platform.h> |
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#include <linux/module.h> |
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#include <linux/reboot.h> |
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static void restart_poweroff_do_poweroff(void) |
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{ |
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reboot_mode = REBOOT_HARD; |
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machine_restart(NULL); |
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} |
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static int restart_poweroff_probe(struct platform_device *pdev) |
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{ |
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/* If a pm_power_off function has already been added, leave it alone */ |
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if (pm_power_off != NULL) { |
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dev_err(&pdev->dev, |
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"pm_power_off function already registered"); |
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return -EBUSY; |
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} |
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pm_power_off = &restart_poweroff_do_poweroff; |
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return 0; |
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} |
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static int restart_poweroff_remove(struct platform_device *pdev) |
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{ |
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if (pm_power_off == &restart_poweroff_do_poweroff) |
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pm_power_off = NULL; |
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return 0; |
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} |
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static const struct of_device_id of_restart_poweroff_match[] = { |
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{ .compatible = "restart-poweroff", }, |
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{}, |
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}; |
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static struct platform_driver restart_poweroff_driver = { |
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.probe = restart_poweroff_probe, |
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.remove = restart_poweroff_remove, |
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.driver = { |
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.name = "poweroff-restart", |
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.of_match_table = of_restart_poweroff_match, |
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}, |
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}; |
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module_platform_driver(restart_poweroff_driver); |
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MODULE_AUTHOR("Andrew Lunn <[email protected]"); |
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MODULE_DESCRIPTION("restart poweroff driver"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_ALIAS("platform:poweroff-restart");
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