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From: Jerry Hoemann <jerry.hoemann@hpe.com>
To: linux@roeck-us.net
Cc: wim@linux-watchdog.org, linux-watchdog@vger.kernel.org,
        linux-kernel@vger.kernel.org, Jerry Hoemann <jerry.hoemann@hpe.com>
Subject: [PATCH v2 1/1] watchdog/hpwdt: Support Suspend and Resume
Date: Wed, 14 Feb 2024 09:49:40 -0700
Message-ID: <20240214164941.630775-2-jerry.hoemann@hpe.com>
In-Reply-To: <20240214164941.630775-1-jerry.hoemann@hpe.com>
References: <20240214164941.630775-1-jerry.hoemann@hpe.com>
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Add call backs to support suspend and resume.

Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
---
 drivers/watchdog/hpwdt.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 138dc8d8ca3d..ae30e394d176 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -378,11 +378,36 @@ static void hpwdt_exit(struct pci_dev *dev)
 	pci_disable_device(dev);
 }
 
+static int hpwdt_suspend(struct device *dev)
+{
+	if (watchdog_active(&hpwdt_dev))
+		hpwdt_stop();
+
+	return 0;
+}
+
+static int hpwdt_resume(struct device *dev)
+{
+	if (watchdog_active(&hpwdt_dev))
+		hpwdt_start(&hpwdt_dev);
+
+	return 0;
+}
+
+static const struct dev_pm_ops hpwdt_pm_ops = {
+	LATE_SYSTEM_SLEEP_PM_OPS(hpwdt_suspend, hpwdt_resume)
+};
+
 static struct pci_driver hpwdt_driver = {
 	.name = "hpwdt",
 	.id_table = hpwdt_devices,
 	.probe = hpwdt_init_one,
 	.remove = hpwdt_exit,
+
+	.driver = {
+		.name = "hpwdt",
+		.pm = &hpwdt_pm_ops,
+	}
 };
 
 MODULE_AUTHOR("Tom Mingarelli");
-- 
2.43.0