watchdog: da9052_wdt: add support for bootstatus bits

Enable support for these bootstatus bits:
    WDIOF_CARDRESET
    WDIOF_OVERHEAT
    WDIOF_POWERUNDER

Signed-off-by: Marcus Folkesson <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

Author: marcusfolkesson

drivers/watchdog/da9052_wdt.c

@@ -135,7 +135,11 @@ static int da9052_wdt_ping(struct watchdog_device *wdt_dev)
 }
 
 static const struct watchdog_info da9052_wdt_info = {
-	.options	= WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
+	.options =	WDIOF_SETTIMEOUT |
+			WDIOF_KEEPALIVEPING |
+			WDIOF_CARDRESET |
+			WDIOF_OVERHEAT |
+			WDIOF_POWERUNDER,
 	.identity	= "DA9052 Watchdog",
 };
 
@@ -169,6 +173,13 @@ static int da9052_wdt_probe(struct platform_device *pdev)
 	da9052_wdt->parent = dev;
 	watchdog_set_drvdata(da9052_wdt, driver_data);
 
+	if (da9052->fault_log & DA9052_FAULTLOG_TWDERROR)
+		da9052_wdt->bootstatus |= WDIOF_CARDRESET;
+	if (da9052->fault_log & DA9052_FAULTLOG_TEMPOVER)
+		da9052_wdt->bootstatus |= WDIOF_OVERHEAT;
+	if (da9052->fault_log & DA9052_FAULTLOG_VDDFAULT)
+		da9052_wdt->bootstatus |= WDIOF_POWERUNDER;
+
 	ret = da9052_reg_update(da9052, DA9052_CONTROL_D_REG,
 				DA9052_CONTROLD_TWDSCALE, 0);
 	if (ret < 0) {