linux-kernel - [PATCH v4 1/3] watchdog: meson_gxbb

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Message-Id: <20210730041355.2810397-2-art@khadas.com>
Date:   Fri, 30 Jul 2021 12:13:53 +0800
From:   Artem Lapkin <email2tema@...il.com>
To:     narmstrong@...libre.com
Cc:     wim@...ux-watchdog.org, linux@...ck-us.net, khilman@...libre.com,
        jbrunet@...libre.com, christianshewitt@...il.com,
        martin.blumenstingl@...glemail.com, linux-watchdog@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        art@...das.com, nick@...das.com, gouwa@...das.com
Subject: [PATCH v4 1/3] watchdog: meson_gxbb_wdt: add nowayout parameter

Add nowayout module parameter

Signed-off-by: Artem Lapkin <art@...das.com>
---
 drivers/watchdog/meson_gxbb_wdt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/watchdog/meson_gxbb_wdt.c b/drivers/watchdog/meson_gxbb_wdt.c
index 5a9ca10fbcfa..5aebc3a09652 100644
--- a/drivers/watchdog/meson_gxbb_wdt.c
+++ b/drivers/watchdog/meson_gxbb_wdt.c
@@ -29,6 +29,11 @@
 #define GXBB_WDT_TCNT_SETUP_MASK		(BIT(16) - 1)
 #define GXBB_WDT_TCNT_CNT_SHIFT			16
 
+static bool nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started default="
+		 __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
 struct meson_gxbb_wdt {
 	void __iomem *reg_base;
 	struct watchdog_device wdt_dev;
@@ -175,6 +180,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev)
 	data->wdt_dev.max_hw_heartbeat_ms = GXBB_WDT_TCNT_SETUP_MASK;
 	data->wdt_dev.min_timeout = 1;
 	data->wdt_dev.timeout = DEFAULT_TIMEOUT;
+	watchdog_set_nowayout(&data->wdt_dev, nowayout);
 	watchdog_set_drvdata(&data->wdt_dev, data);
 
 	/* Setup with 1ms timebase */
-- 
2.25.1