Improve meson_gxbb_wdt watchdog driver
1) added module param timeout and nowayout same as other modules
2) print watchdog driver start status
3) add watchdog_stop_on_unregister
4) remove watchdog_stop_on_reboot ( still can be activated by
watchdog.stop_on_reboot=1 ) i think this driver configuration more useful
becouse we can get reboot waranty for abnormal situations on shutdown stage
Signed-off-by: Artem Lapkin <art@xxxxxxxxxx>
---
drivers/watchdog/meson_gxbb_wdt.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/watchdog/meson_gxbb_wdt.c b/drivers/watchdog/meson_gxbb_wdt.c
index 5a9ca10fbcfa..15c889932c13 100644
--- a/drivers/watchdog/meson_gxbb_wdt.c
+++ b/drivers/watchdog/meson_gxbb_wdt.c
@@ -35,6 +35,17 @@ struct meson_gxbb_wdt {
struct clk *clk;
};
+static bool nowayout = WATCHDOG_NOWAYOUT;
+static unsigned int timeout = DEFAULT_TIMEOUT;
+
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
+module_param(timeout, uint, 0);
+MODULE_PARM_DESC(timeout, "Watchdog heartbeat in seconds="
+ __MODULE_STRING(DEFAULT_TIMEOUT) ")");
+
static int meson_gxbb_wdt_start(struct watchdog_device *wdt_dev)
{
struct meson_gxbb_wdt *data = watchdog_get_drvdata(wdt_dev);
@@ -174,7 +185,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev)
data->wdt_dev.ops = &meson_gxbb_wdt_ops;
data->wdt_dev.max_hw_heartbeat_ms = GXBB_WDT_TCNT_SETUP_MASK;
data->wdt_dev.min_timeout = 1;
- data->wdt_dev.timeout = DEFAULT_TIMEOUT;
+ data->wdt_dev.timeout = timeout;
watchdog_set_drvdata(&data->wdt_dev, data);
/* Setup with 1ms timebase */
@@ -186,7 +197,12 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev)
meson_gxbb_wdt_set_timeout(&data->wdt_dev, data->wdt_dev.timeout);
- watchdog_stop_on_reboot(&data->wdt_dev);
+ watchdog_set_nowayout(&data->wdt_dev, nowayout);
+ watchdog_stop_on_unregister(&data->wdt_dev);
+
+ dev_info(dev, "Watchdog enabled (timeout=%d sec, nowayout=%d)",
+ data->wdt_dev.timeout, nowayout);
+
return devm_watchdog_register_device(dev, &data->wdt_dev);
}
--
2.25.1
