linux-kernel - [PATCH 2/2] watchdog: da9052_wdt: add support for bootstatus bits

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Message-Id: <20241210-da9052-wdt-v1-2-d026e0158688@gmail.com>
Date: Tue, 10 Dec 2024 14:13:49 +0100
From: Marcus Folkesson <marcus.folkesson@...il.com>
To: Support Opensource <support.opensource@...semi.com>, 
 Lee Jones <lee@...nel.org>, Wim Van Sebroeck <wim@...ux-watchdog.org>, 
 Guenter Roeck <linux@...ck-us.net>
Cc: linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org, 
 Marcus Folkesson <marcus.folkesson@...il.com>
Subject: [PATCH 2/2] 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 <marcus.folkesson@...il.com>
---
 drivers/watchdog/da9052_wdt.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/da9052_wdt.c b/drivers/watchdog/da9052_wdt.c
index d708c091bf1b1e3327a134d4d2244d4b883d14e4..77039f2f0be54273df1666fe40c413b6c89285a1 100644
--- a/drivers/watchdog/da9052_wdt.c
+++ b/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) {

-- 
2.47.0