Commit 2a31bf20 authored by Keguang Zhang's avatar Keguang Zhang Committed by Wim Van Sebroeck
Browse files

watchdog: loongson1_wdt: Implement restart handler 



Implement restart handler for the Loongson-1 watchdog driver and
define the watchdog registers instead of including the legacy header.

Signed-off-by: default avatarKeguang Zhang <keguang.zhang@gmail.com>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230330112051.551648-3-keguang.zhang@gmail.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent d0ee0e8a

drivers/watchdog/loongson1_wdt.c

+18 −1
Original line number Diff line number Diff line
@@ -7,7 +7,11 @@ 
#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/watchdog.h>

#include <loongson1.h>



/* Loongson 1 Watchdog Register Definitions */

#define WDT_EN			0x0

#define WDT_TIMER		0x4

#define WDT_SET			0x8



#define DEFAULT_HEARTBEAT	30
@@ -66,6 +70,18 @@ static int ls1x_wdt_stop(struct watchdog_device *wdt_dev) 
	return 0;

}



static int ls1x_wdt_restart(struct watchdog_device *wdt_dev,

			    unsigned long action, void *data)

{

	struct ls1x_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev);



	writel(0x1, drvdata->base + WDT_EN);

	writel(0x1, drvdata->base + WDT_TIMER);

	writel(0x1, drvdata->base + WDT_SET);



	return 0;

}



static const struct watchdog_info ls1x_wdt_info = {

	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,

	.identity = "Loongson1 Watchdog",
@@ -77,6 +93,7 @@ static const struct watchdog_ops ls1x_wdt_ops = { 
	.stop = ls1x_wdt_stop,

	.ping = ls1x_wdt_ping,

	.set_timeout = ls1x_wdt_set_timeout,

	.restart = ls1x_wdt_restart,

};



static int ls1x_wdt_probe(struct platform_device *pdev)