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Commit 4ed5443d authored by Sylvain Lemieux's avatar Sylvain Lemieux Committed by Wim Van Sebroeck
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watchdog: pnx4008: add restart handler 



Add restart handler capability to the driver;
the restart handler implementation was taken from
"mach-lpc32xx" ("lpc23xx_restart" function).

Signed-off-by: default avatarSylvain Lemieux <slemieux@tycoint.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 43eec2f5

drivers/watchdog/pnx4008_wdt.c

+17 −0
Original line number Diff line number Diff line
@@ -31,6 +31,8 @@ 
#include <linux/slab.h>

#include <linux/err.h>

#include <linux/of.h>

#include <linux/delay.h>

#include <linux/reboot.h>

#include <mach/hardware.h>



/* WatchDog Timer - Chapter 23 Page 207 */
@@ -124,6 +126,19 @@ static int pnx4008_wdt_set_timeout(struct watchdog_device *wdd, 
	return 0;

}



static int pnx4008_restart_handler(struct watchdog_device *wdd,

				   unsigned long mode, void *cmd)

{

	/* Instant assert of RESETOUT_N with pulse length 1mS */

	writel(13000, WDTIM_PULSE(wdt_base));

	writel(M_RES2 | RESFRC1 | RESFRC2, WDTIM_MCTRL(wdt_base));



	/* Wait for watchdog to reset system */

	mdelay(1000);



	return NOTIFY_DONE;

}



static const struct watchdog_info pnx4008_wdt_ident = {

	.options = WDIOF_CARDRESET | WDIOF_MAGICCLOSE |

	    WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
@@ -135,6 +150,7 @@ static const struct watchdog_ops pnx4008_wdt_ops = { 
	.start = pnx4008_wdt_start,

	.stop = pnx4008_wdt_stop,

	.set_timeout = pnx4008_wdt_set_timeout,

	.restart = pnx4008_restart_handler,

};



static struct watchdog_device pnx4008_wdd = {
@@ -169,6 +185,7 @@ static int pnx4008_wdt_probe(struct platform_device *pdev) 
			WDIOF_CARDRESET : 0;

	pnx4008_wdd.parent = &pdev->dev;

	watchdog_set_nowayout(&pnx4008_wdd, nowayout);

	watchdog_set_restart_priority(&pnx4008_wdd, 128);



	pnx4008_wdt_stop(&pnx4008_wdd);	/* disable for now */