diff options
Diffstat (limited to 'drivers/rtc/rtc-pcf2127.c')
| -rw-r--r-- | drivers/rtc/rtc-pcf2127.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index 2e1ac0c42e93..bb4fe81d3d62 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -42,6 +42,7 @@ #define PCF2127_BIT_CTRL2_AF BIT(4) #define PCF2127_BIT_CTRL2_TSF2 BIT(5) #define PCF2127_BIT_CTRL2_WDTF BIT(6) +#define PCF2127_BIT_CTRL2_MSF BIT(7) /* Control register 3 */ #define PCF2127_REG_CTRL3 0x02 #define PCF2127_BIT_CTRL3_BLIE BIT(0) @@ -96,7 +97,8 @@ #define PCF2127_CTRL2_IRQ_MASK ( \ PCF2127_BIT_CTRL2_AF | \ PCF2127_BIT_CTRL2_WDTF | \ - PCF2127_BIT_CTRL2_TSF2) + PCF2127_BIT_CTRL2_TSF2 | \ + PCF2127_BIT_CTRL2_MSF) #define PCF2127_MAX_TS_SUPPORTED 4 @@ -606,6 +608,21 @@ static int pcf2127_watchdog_init(struct device *dev, struct pcf2127 *pcf2127) set_bit(WDOG_HW_RUNNING, &pcf2127->wdd.status); } + /* + * When using interrupt pin (INT A) as watchdog output, only allow + * watchdog interrupt (PCF2131_BIT_INT_WD_CD) and disable (mask) all + * other interrupts. + */ + if (pcf2127->cfg->type == PCF2131) { + ret = regmap_write(pcf2127->regmap, + PCF2131_REG_INT_A_MASK1, + PCF2131_BIT_INT_BLIE | + PCF2131_BIT_INT_BIE | + PCF2131_BIT_INT_AIE | + PCF2131_BIT_INT_SI | + PCF2131_BIT_INT_MI); + } + return devm_watchdog_register_device(dev, &pcf2127->wdd); } |