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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH 4/4] watchdog: f71808e: support .running device parameter
Date: Mon,  4 Nov 2019 19:25:55 +0100	[thread overview]
Message-ID: <20191104182555.9874-4-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20191104182555.9874-1-a.fatoum@pengutronix.de>

The American Megatrends BIOS I am using can be configured to start the
Fintek watchdog prior to the UEFI payloads. To avoid BIOS updates that reset
this functionality going unnoticed, implement support for WDOG_HW_RUNNING.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/watchdog/f71808e_wdt.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index 4f881a1d02bc..2b2f98a12cca 100644
--- a/drivers/watchdog/f71808e_wdt.c
+++ b/drivers/watchdog/f71808e_wdt.c
@@ -222,7 +222,7 @@ static int f71808e_wdt_init(struct f71808e_wdt *wd, struct device_d *dev)
 {
 	struct watchdog *wdd = &wd->wdd;
 	const char * const *names = pulse_width_names;
-	int wdt_conf;
+	unsigned long wdt_conf;
 	int ret;
 
 	superio_enter(wd->sioaddr);
@@ -262,6 +262,10 @@ static int f71808e_wdt_init(struct f71808e_wdt *wd, struct device_d *dev)
 
 	dev_info(dev, "reset reason: %s\n", reset_source_name());
 
+	set_bit(WDOG_HW_RUNNING, &wdd->status_supported);
+	if (test_bit(F71808FG_FLAG_WD_EN, &wdt_conf))
+		set_bit(WDOG_HW_RUNNING, &wdd->status);
+
 	ret = watchdog_register(wdd);
 	if (ret)
 		return ret;
-- 
2.24.0.rc1


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      parent reply	other threads:[~2019-11-04 18:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-04 18:25 [PATCH 1/4] watchdog: always populate watchdog priority from device tree if possible Ahmad Fatoum
2019-11-04 18:25 ` [PATCH 2/4] watchdog: implement generic support for .running device parameter Ahmad Fatoum
2019-11-04 18:25 ` [PATCH 3/4] watchdog: imxwd: support .running device parameter on i.MX2+ Ahmad Fatoum
2019-11-04 18:25 ` Ahmad Fatoum [this message]

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