2 * Power off by restarting and let u-boot keep hold of the machine
3 * until the user presses a button for example.
5 * Andrew Lunn <andrew@lunn.ch>
7 * Copyright (C) 2012 Andrew Lunn
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/of_platform.h>
17 #include <linux/module.h>
18 #include <asm/system_misc.h>
20 static void restart_poweroff_do_poweroff(void)
22 arm_pm_restart('h', NULL);
25 static int restart_poweroff_probe(struct platform_device *pdev)
27 /* If a pm_power_off function has already been added, leave it alone */
28 if (pm_power_off != NULL) {
30 "pm_power_off function already registered");
34 pm_power_off = &restart_poweroff_do_poweroff;
38 static int restart_poweroff_remove(struct platform_device *pdev)
40 if (pm_power_off == &restart_poweroff_do_poweroff)
46 static const struct of_device_id of_restart_poweroff_match[] = {
47 { .compatible = "restart-poweroff", },
51 static struct platform_driver restart_poweroff_driver = {
52 .probe = restart_poweroff_probe,
53 .remove = restart_poweroff_remove,
55 .name = "poweroff-restart",
57 .of_match_table = of_restart_poweroff_match,
60 module_platform_driver(restart_poweroff_driver);
62 MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch");
63 MODULE_DESCRIPTION("restart poweroff driver");
64 MODULE_LICENSE("GPLv2");
65 MODULE_ALIAS("platform:poweroff-restart");