linux/drivers/watchdog/rn5t618_wdt.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Watchdog driver for Ricoh RN5T618 PMIC
 *
 * Copyright (C) 2014 Beniamino Galvani <[email protected]>
 */

#include <linux/device.h>
#include <linux/mfd/rn5t618.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/watchdog.h>

#define DRIVER_NAME …

static bool nowayout = … WATCHDOG_NOWAYOUT;
static unsigned int timeout;

module_param(timeout, uint, 0);
MODULE_PARM_DESC(…) …;

module_param(nowayout, bool, 0);
MODULE_PARM_DESC(…) …;

struct rn5t618_wdt { … };

/*
 * This array encodes the values of WDOGTIM field for the supported
 * watchdog expiration times. If the watchdog is not accessed before
 * the timer expiration, the PMU generates an interrupt and if the CPU
 * doesn't clear it within one second the system is restarted.
 */
static const struct { … } rn5t618_wdt_map[] = …;

static int rn5t618_wdt_set_timeout(struct watchdog_device *wdt_dev,
				   unsigned int t)
{ … }

static int rn5t618_wdt_start(struct watchdog_device *wdt_dev)
{ … }

static int rn5t618_wdt_stop(struct watchdog_device *wdt_dev)
{ … }

static int rn5t618_wdt_ping(struct watchdog_device *wdt_dev)
{ … }

static const struct watchdog_info rn5t618_wdt_info = …;

static const struct watchdog_ops rn5t618_wdt_ops = …;

static int rn5t618_wdt_probe(struct platform_device *pdev)
{ … }

static struct platform_driver rn5t618_wdt_driver = …;

module_platform_driver(…) …;

MODULE_ALIAS(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;