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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Emil Renner Berthing
*/
#include <linux/mfd/tps65086.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
static int tps65086_restart_notify(struct sys_off_data *data)
{
struct tps65086 *tps65086 = data->cb_data;
int ret;
ret = regmap_write(tps65086->regmap, TPS65086_FORCESHUTDN, 1);
if (ret) {
dev_err(tps65086->dev, "%s: error writing to tps65086 pmic: %d\n",
__func__, ret);
return NOTIFY_DONE;
}
/* give it a little time */
mdelay(200);
WARN_ON(1);
return NOTIFY_DONE;
}
static int tps65086_restart_probe(struct platform_device *pdev)
{
struct tps65086 *tps65086 = dev_get_drvdata(pdev->dev.parent);
return devm_register_sys_off_handler(&pdev->dev,
SYS_OFF_MODE_RESTART,
SYS_OFF_PRIO_HIGH,
tps65086_restart_notify,
tps65086);
}
static const struct platform_device_id tps65086_restart_id_table[] = {
{ "tps65086-reset", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65086_restart_id_table);
static struct platform_driver tps65086_restart_driver = {
.driver = {
.name = "tps65086-restart",
},
.probe = tps65086_restart_probe,
.id_table = tps65086_restart_id_table,
};
module_platform_driver(tps65086_restart_driver);
MODULE_AUTHOR("Emil Renner Berthing <kernel@esmil.dk>");
MODULE_DESCRIPTION("TPS65086 restart driver");
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