97fb5e8d9b
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 and only version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 294 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141900.825281744@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/err.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/io.h>
|
|
#include <linux/of.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/pm.h>
|
|
|
|
static void __iomem *msm_ps_hold;
|
|
static int deassert_pshold(struct notifier_block *nb, unsigned long action,
|
|
void *data)
|
|
{
|
|
writel(0, msm_ps_hold);
|
|
mdelay(10000);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
static struct notifier_block restart_nb = {
|
|
.notifier_call = deassert_pshold,
|
|
.priority = 128,
|
|
};
|
|
|
|
static void do_msm_poweroff(void)
|
|
{
|
|
deassert_pshold(&restart_nb, 0, NULL);
|
|
}
|
|
|
|
static int msm_restart_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct resource *mem;
|
|
|
|
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
msm_ps_hold = devm_ioremap_resource(dev, mem);
|
|
if (IS_ERR(msm_ps_hold))
|
|
return PTR_ERR(msm_ps_hold);
|
|
|
|
register_restart_handler(&restart_nb);
|
|
|
|
pm_power_off = do_msm_poweroff;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id of_msm_restart_match[] = {
|
|
{ .compatible = "qcom,pshold", },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, of_msm_restart_match);
|
|
|
|
static struct platform_driver msm_restart_driver = {
|
|
.probe = msm_restart_probe,
|
|
.driver = {
|
|
.name = "msm-restart",
|
|
.of_match_table = of_match_ptr(of_msm_restart_match),
|
|
},
|
|
};
|
|
|
|
static int __init msm_restart_init(void)
|
|
{
|
|
return platform_driver_register(&msm_restart_driver);
|
|
}
|
|
device_initcall(msm_restart_init);
|