watchdog: meson_gxbb_wdt: add nowayout parameter

Add nowayout module parameter

Signed-off-by: Artem Lapkin <art@khadas.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210730041355.2810397-2-art@khadas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/meson_gxbb_wdt.c b/drivers/watchdog/meson_gxbb_wdt.c
index 5a9ca10fbcfa0b862c6d3a3aebb860af7ddf6545..5aebc3a096527a4835ebe9f986420222aebd3d07 100644 (file)
--- 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 */