1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Power off by restarting and let u-boot keep hold of the machine
 4 * until the user presses a button for example.
 5 *
 6 * Andrew Lunn <andrew@lunn.ch>
 7 *
 8 * Copyright (C) 2012 Andrew Lunn
 9 */
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/platform_device.h>
13#include <linux/of_platform.h>
14#include <linux/module.h>
15#include <linux/reboot.h>
16
17static int restart_poweroff_do_poweroff(struct sys_off_data *data)
18{
19	reboot_mode = REBOOT_HARD;
20	machine_restart(NULL);
21	return NOTIFY_DONE;
22}
23
24static int restart_poweroff_probe(struct platform_device *pdev)
25{
26	/* Set this handler to low priority to not override an existing handler */
27	return devm_register_sys_off_handler(&pdev->dev,
28					     SYS_OFF_MODE_POWER_OFF,
29					     SYS_OFF_PRIO_LOW,
30					     restart_poweroff_do_poweroff,
31					     NULL);
 
 
 
 
 
 
 
 
 
32}
33
34static const struct of_device_id of_restart_poweroff_match[] = {
35	{ .compatible = "restart-poweroff", },
36	{},
37};
38MODULE_DEVICE_TABLE(of, of_restart_poweroff_match);
39
40static struct platform_driver restart_poweroff_driver = {
41	.probe = restart_poweroff_probe,
 
42	.driver = {
43		.name = "poweroff-restart",
44		.of_match_table = of_restart_poweroff_match,
45	},
46};
47module_platform_driver(restart_poweroff_driver);
48
49MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch");
50MODULE_DESCRIPTION("restart poweroff driver");
51MODULE_ALIAS("platform:poweroff-restart");

 1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Power off by restarting and let u-boot keep hold of the machine
 4 * until the user presses a button for example.
 5 *
 6 * Andrew Lunn <andrew@lunn.ch>
 7 *
 8 * Copyright (C) 2012 Andrew Lunn
 9 */
10#include <linux/kernel.h>
11#include <linux/init.h>
12#include <linux/platform_device.h>
13#include <linux/of_platform.h>
14#include <linux/module.h>
15#include <linux/reboot.h>
16
17static void restart_poweroff_do_poweroff(void)
18{
19	reboot_mode = REBOOT_HARD;
20	machine_restart(NULL);
 
21}
22
23static int restart_poweroff_probe(struct platform_device *pdev)
24{
25	/* If a pm_power_off function has already been added, leave it alone */
26	if (pm_power_off != NULL) {
27		dev_err(&pdev->dev,
28			"pm_power_off function already registered");
29		return -EBUSY;
30	}
31
32	pm_power_off = &restart_poweroff_do_poweroff;
33	return 0;
34}
35
36static void restart_poweroff_remove(struct platform_device *pdev)
37{
38	if (pm_power_off == &restart_poweroff_do_poweroff)
39		pm_power_off = NULL;
40}
41
42static const struct of_device_id of_restart_poweroff_match[] = {
43	{ .compatible = "restart-poweroff", },
44	{},
45};
46MODULE_DEVICE_TABLE(of, of_restart_poweroff_match);
47
48static struct platform_driver restart_poweroff_driver = {
49	.probe = restart_poweroff_probe,
50	.remove_new = restart_poweroff_remove,
51	.driver = {
52		.name = "poweroff-restart",
53		.of_match_table = of_restart_poweroff_match,
54	},
55};
56module_platform_driver(restart_poweroff_driver);
57
58MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch");
59MODULE_DESCRIPTION("restart poweroff driver");
60MODULE_ALIAS("platform:poweroff-restart");