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- From b6ef36d2c1e391adc1fe1b2dd2a0f887a9f3052b Mon Sep 17 00:00:00 2001
- From: Guenter Roeck <groeck@chromium.org>
- Date: Mon, 4 Apr 2016 17:37:46 -0700
- Subject: 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: Grant Grundler <grundler@chromium.org>
- Tested-by: Grant Grundler <grundler@chromium.org>
- Signed-off-by: Guenter Roeck <groeck@chromium.org>
- Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
- ---
- drivers/watchdog/qcom-wdt.c | 7 ++++++-
- 1 file changed, 6 insertions(+), 1 deletion(-)
- --- a/drivers/watchdog/qcom-wdt.c
- +++ b/drivers/watchdog/qcom-wdt.c
- @@ -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_wd
- 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 platfor
- 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
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