RTC_WDAY_MASK      61 drivers/rtc/rtc-pl031.c #define RTC_WDAY_MASK (0x7 << RTC_WDAY_SHIFT) /* Day of Week [1-7] 1=Sunday */
RTC_WDAY_MASK     128 include/linux/rtc/ds1685.h #define RTC_WDAY_MASK		0x07	/* - - - - - x x x */