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Commit b6ef36d2 authored by Guenter Roeck's avatar Guenter Roeck Committed by Wim Van Sebroeck
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watchdog: qcom: Report reboot reason 



The Qualcom watchdog timer block reports if the system was reset by the
watchdog. Pass the information to user space.

Reviewed-by: default avatarGrant Grundler <grundler@chromium.org>
Tested-by: default avatarGrant Grundler <grundler@chromium.org>
Signed-off-by: default avatarGuenter Roeck <groeck@chromium.org>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 44549e8f

drivers/watchdog/qcom-wdt.c

+6 −1
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 


#define WDT_RST		0x38

#define WDT_EN		0x40

#define WDT_STS		0x44

#define WDT_BITE_TIME	0x5C



struct qcom_wdt {
@@ -108,7 +109,8 @@ static const struct watchdog_ops qcom_wdt_ops = { 
static const struct watchdog_info qcom_wdt_info = {

	.options	= WDIOF_KEEPALIVEPING

			| WDIOF_MAGICCLOSE

			| WDIOF_SETTIMEOUT,

			| WDIOF_SETTIMEOUT

			| WDIOF_CARDRESET,

	.identity	= KBUILD_MODNAME,

};
@@ -171,6 +173,9 @@ static int qcom_wdt_probe(struct platform_device *pdev) 
	wdt->wdd.max_timeout = 0x10000000U / wdt->rate;

	wdt->wdd.parent = &pdev->dev;



	if (readl(wdt->base + WDT_STS) & 1)

		wdt->wdd.bootstatus = WDIOF_CARDRESET;



	/*

	 * If 'timeout-sec' unspecified in devicetree, assume a 30 second

	 * default, unless the max timeout is less than 30 seconds, then use