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-rw-r--r--drivers/watchdog/da9062_wdt.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/watchdog/da9062_wdt.c b/drivers/watchdog/da9062_wdt.c
index 777d7eec7f2e..0ad15d55071c 100644
--- a/drivers/watchdog/da9062_wdt.c
+++ b/drivers/watchdog/da9062_wdt.c
@@ -16,6 +16,7 @@
#include <linux/jiffies.h>
#include <linux/mfd/da9062/registers.h>
#include <linux/mfd/da9062/core.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/of.h>
@@ -31,6 +32,7 @@ static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 };
struct da9062_watchdog {
struct da9062 *hw;
struct watchdog_device wdtdev;
+ bool use_sw_pm;
};
static unsigned int da9062_wdt_timeout_to_sel(unsigned int secs)
@@ -193,6 +195,8 @@ static int da9062_wdt_probe(struct platform_device *pdev)
if (!wdt)
return -ENOMEM;
+ wdt->use_sw_pm = device_property_present(dev, "dlg,use-sw-pm");
+
wdt->hw = chip;
wdt->wdtdev.info = &da9062_watchdog_info;
@@ -219,6 +223,10 @@ static int da9062_wdt_probe(struct platform_device *pdev)
static int __maybe_unused da9062_wdt_suspend(struct device *dev)
{
struct watchdog_device *wdd = dev_get_drvdata(dev);
+ struct da9062_watchdog *wdt = watchdog_get_drvdata(wdd);
+
+ if (!wdt->use_sw_pm)
+ return 0;
if (watchdog_active(wdd))
return da9062_wdt_stop(wdd);
@@ -229,6 +237,10 @@ static int __maybe_unused da9062_wdt_suspend(struct device *dev)
static int __maybe_unused da9062_wdt_resume(struct device *dev)
{
struct watchdog_device *wdd = dev_get_drvdata(dev);
+ struct da9062_watchdog *wdt = watchdog_get_drvdata(wdd);
+
+ if (!wdt->use_sw_pm)
+ return 0;
if (watchdog_active(wdd))
return da9062_wdt_start(wdd);