#include <linux/regmap.h>
#include <linux/watchdog.h>
+#define PON_POFF_REASON1 0x0c
+#define PON_POFF_REASON1_PMIC_WD BIT(2)
+#define PON_POFF_REASON2 0x0d
+#define PON_POFF_REASON2_UVLO BIT(5)
+#define PON_POFF_REASON2_OTST3 BIT(6)
+
#define PON_INT_RT_STS 0x10
#define PMIC_WD_BARK_STS_BIT BIT(6)
}
static const struct watchdog_info pm8916_wdt_ident = {
- .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE |
+ WDIOF_OVERHEAT | WDIOF_CARDRESET | WDIOF_POWERUNDER,
.identity = "QCOM PM8916 PON WDT",
};
static const struct watchdog_info pm8916_wdt_pt_ident = {
.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE |
+ WDIOF_OVERHEAT | WDIOF_CARDRESET | WDIOF_POWERUNDER |
WDIOF_PRETIMEOUT,
.identity = "QCOM PM8916 PON WDT",
};
struct pm8916_wdt *wdt;
struct device *parent;
int err, irq;
+ u8 poff[2];
wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
if (!wdt)
wdt->wdev.info = &pm8916_wdt_ident;
}
+ err = regmap_bulk_read(wdt->regmap, wdt->baseaddr + PON_POFF_REASON1,
+ &poff, ARRAY_SIZE(poff));
+ if (err) {
+ dev_err(dev, "failed to read POFF reason: %d\n", err);
+ return err;
+ }
+
+ dev_dbg(dev, "POFF reason: %#x %#x\n", poff[0], poff[1]);
+ if (poff[0] & PON_POFF_REASON1_PMIC_WD)
+ wdt->wdev.bootstatus |= WDIOF_CARDRESET;
+ if (poff[1] & PON_POFF_REASON2_UVLO)
+ wdt->wdev.bootstatus |= WDIOF_POWERUNDER;
+ if (poff[1] & PON_POFF_REASON2_OTST3)
+ wdt->wdev.bootstatus |= WDIOF_OVERHEAT;
+
/* Configure watchdog to hard-reset mode */
err = regmap_write(wdt->regmap,
wdt->baseaddr + PON_PMIC_WD_RESET_S2_CTL,