Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8773926d authored by Jonas Jensen's avatar Jonas Jensen Committed by Wim Van Sebroeck
Browse files

watchdog: mach-moxart: add restart handler 



mach-moxart lacks a separate register for reset; as a workaround,
add a function that can be hooked to arm_pm_restart.

Signed-off-by: default avatarJonas Jensen <jonas.jensen@gmail.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent d5cfaf0a

drivers/watchdog/moxart_wdt.c

+15 −0
Original line number Diff line number Diff line
@@ -19,6 +19,8 @@ 
#include <linux/watchdog.h>

#include <linux/moduleparam.h>



#include <asm/system_misc.h>



#define REG_COUNT			0x4

#define REG_MODE			0x8

#define REG_ENABLE			0xC
@@ -29,8 +31,17 @@ struct moxart_wdt_dev { 
	unsigned int clock_frequency;

};



static struct moxart_wdt_dev *moxart_restart_ctx;



static int heartbeat;



static void moxart_wdt_restart(enum reboot_mode reboot_mode, const char *cmd)

{

	writel(1, moxart_restart_ctx->base + REG_COUNT);

	writel(0x5ab9, moxart_restart_ctx->base + REG_MODE);

	writel(0x03, moxart_restart_ctx->base + REG_ENABLE);

}



static int moxart_wdt_stop(struct watchdog_device *wdt_dev)

{

	struct moxart_wdt_dev *moxart_wdt = watchdog_get_drvdata(wdt_dev);
@@ -125,6 +136,9 @@ static int moxart_wdt_probe(struct platform_device *pdev) 
	if (err)

		return err;



	moxart_restart_ctx = moxart_wdt;

	arm_pm_restart = moxart_wdt_restart;



	dev_dbg(dev, "Watchdog enabled (heartbeat=%d sec, nowayout=%d)\n",

		moxart_wdt->dev.timeout, nowayout);
@@ -135,6 +149,7 @@ static int moxart_wdt_remove(struct platform_device *pdev) 
{

	struct moxart_wdt_dev *moxart_wdt = platform_get_drvdata(pdev);



	arm_pm_restart = NULL;

	moxart_wdt_stop(&moxart_wdt->dev);

	watchdog_unregister_device(&moxart_wdt->dev);