projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| ffd8f9a7 AL |
1 | /* |
| 2 | * Power off by restarting and let u-boot keep hold of the machine | |
| 3 | * until the user presses a button for example. | |
| 4 | * | |
| 5 | * Andrew Lunn <andrew@lunn.ch> | |
| 6 | * | |
| 7 | * Copyright (C) 2012 Andrew Lunn | |
| 8 | * | |
| 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. | |
| 12 | */ | |
| 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> | |
| 7b6d864b | 18 | #include <linux/reboot.h> |
| ffd8f9a7 AL |
19 | |
| 20 | static void restart_poweroff_do_poweroff(void) | |
| 21 | { | |
| 0713e143 GR |
22 | reboot_mode = REBOOT_HARD; |
| 23 | machine_restart(NULL); | |
| ffd8f9a7 AL |
24 | } |
| 25 | ||
| 60a1c4d4 | 26 | static int restart_poweroff_probe(struct platform_device *pdev) |
| ffd8f9a7 AL |
27 | { |
| 28 | /* If a pm_power_off function has already been added, leave it alone */ | |
| 29 | if (pm_power_off != NULL) { | |
| 30 | dev_err(&pdev->dev, | |
| 31 | "pm_power_off function already registered"); | |
| 32 | return -EBUSY; | |
| 33 | } | |
| 34 | ||
| 35 | pm_power_off = &restart_poweroff_do_poweroff; | |
| 36 | return 0; | |
| 37 | } | |
| 38 | ||
| 60a1c4d4 | 39 | static int restart_poweroff_remove(struct platform_device *pdev) |
| ffd8f9a7 AL |
40 | { |
| 41 | if (pm_power_off == &restart_poweroff_do_poweroff) | |
| 42 | pm_power_off = NULL; | |
| 43 | ||
| 44 | return 0; | |
| 45 | } | |
| 46 | ||
| 47 | static const struct of_device_id of_restart_poweroff_match[] = { | |
| 48 | { .compatible = "restart-poweroff", }, | |
| 49 | {}, | |
| 50 | }; | |
| 51 | ||
| 52 | static struct platform_driver restart_poweroff_driver = { | |
| 53 | .probe = restart_poweroff_probe, | |
| 60a1c4d4 | 54 | .remove = restart_poweroff_remove, |
| ffd8f9a7 AL |
55 | .driver = { |
| 56 | .name = "poweroff-restart", | |
| ffd8f9a7 AL |
57 | .of_match_table = of_restart_poweroff_match, |
| 58 | }, | |
| 59 | }; | |
| 60 | module_platform_driver(restart_poweroff_driver); | |
| 61 | ||
| 62 | MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch"); | |
| 63 | MODULE_DESCRIPTION("restart poweroff driver"); | |
| 661468b4 | 64 | MODULE_LICENSE("GPL v2"); |
| ffd8f9a7 | 65 | MODULE_ALIAS("platform:poweroff-restart"); |