From ffd8f9a727f27270584c7472ca56cce1e4736888 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Fri, 28 Dec 2012 13:25:11 +0100 Subject: power/reset: Add a new driver implementing 'power off by restarting' Some devices, Buffalo Linkstation LS-XHL and LS-CHLv2 for example, power-off by restarting to letting u-boot hold the SoC until the user presses a key. Add a generic driver to implement this. It binds a function to pm_power_off, which calls arm_pm_restart. Signed-off-by: Andrew Lunn Tested-by: Michael Walle Signed-off-by: Anton Vorontsov --- drivers/power/reset/restart-poweroff.c | 65 ++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 drivers/power/reset/restart-poweroff.c (limited to 'drivers/power/reset/restart-poweroff.c') diff --git a/drivers/power/reset/restart-poweroff.c b/drivers/power/reset/restart-poweroff.c new file mode 100644 index 000000000000..b11b9e887174 --- /dev/null +++ b/drivers/power/reset/restart-poweroff.c @@ -0,0 +1,65 @@ +/* + * Power off by restarting and let u-boot keep hold of the machine + * until the user presses a button for example. + * + * Andrew Lunn + * + * Copyright (C) 2012 Andrew Lunn + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include +#include +#include +#include + +static void restart_poweroff_do_poweroff(void) +{ + arm_pm_restart('h', NULL); +} + +static int __devinit restart_poweroff_probe(struct platform_device *pdev) +{ + /* If a pm_power_off function has already been added, leave it alone */ + if (pm_power_off != NULL) { + dev_err(&pdev->dev, + "pm_power_off function already registered"); + return -EBUSY; + } + + pm_power_off = &restart_poweroff_do_poweroff; + return 0; +} + +static int __devexit restart_poweroff_remove(struct platform_device *pdev) +{ + if (pm_power_off == &restart_poweroff_do_poweroff) + pm_power_off = NULL; + + return 0; +} + +static const struct of_device_id of_restart_poweroff_match[] = { + { .compatible = "restart-poweroff", }, + {}, +}; + +static struct platform_driver restart_poweroff_driver = { + .probe = restart_poweroff_probe, + .remove = __devexit_p(restart_poweroff_remove), + .driver = { + .name = "poweroff-restart", + .owner = THIS_MODULE, + .of_match_table = of_restart_poweroff_match, + }, +}; +module_platform_driver(restart_poweroff_driver); + +MODULE_AUTHOR("Andrew Lunn Date: Wed, 30 Jan 2013 12:28:13 +0100 Subject: power/reset: Remove newly introduced __dev* annotations __devinit, __devexit and __devexit_p have recently been removed and should no longer be used. Signed-off-by: Thierry Reding Signed-off-by: Jason Cooper Acked-by: Andrew Lunn Signed-off-by: Anton Vorontsov --- drivers/power/reset/restart-poweroff.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/power/reset/restart-poweroff.c') diff --git a/drivers/power/reset/restart-poweroff.c b/drivers/power/reset/restart-poweroff.c index b11b9e887174..059cd1501e2a 100644 --- a/drivers/power/reset/restart-poweroff.c +++ b/drivers/power/reset/restart-poweroff.c @@ -22,7 +22,7 @@ static void restart_poweroff_do_poweroff(void) arm_pm_restart('h', NULL); } -static int __devinit restart_poweroff_probe(struct platform_device *pdev) +static int restart_poweroff_probe(struct platform_device *pdev) { /* If a pm_power_off function has already been added, leave it alone */ if (pm_power_off != NULL) { @@ -35,7 +35,7 @@ static int __devinit restart_poweroff_probe(struct platform_device *pdev) return 0; } -static int __devexit restart_poweroff_remove(struct platform_device *pdev) +static int restart_poweroff_remove(struct platform_device *pdev) { if (pm_power_off == &restart_poweroff_do_poweroff) pm_power_off = NULL; @@ -50,7 +50,7 @@ static const struct of_device_id of_restart_poweroff_match[] = { static struct platform_driver restart_poweroff_driver = { .probe = restart_poweroff_probe, - .remove = __devexit_p(restart_poweroff_remove), + .remove = restart_poweroff_remove, .driver = { .name = "poweroff-restart", .owner = THIS_MODULE, -- cgit v1.2.3