1 /* 2 * Registers for the SGS-Thomson M48T37 Timekeeper RAM chip 3 */ 4 #ifndef _ASM_M48T37_H 5 #define _ASM_M48T37_H 6 7 #include <linux/spinlock.h> 8 9 extern spinlock_t rtc_lock; 10 11 struct m48t37_rtc { 12 volatile u8 pad[0x7ff0]; /* NVRAM */ 13 volatile u8 flags; 14 volatile u8 century; 15 volatile u8 alarm_sec; 16 volatile u8 alarm_min; 17 volatile u8 alarm_hour; 18 volatile u8 alarm_data; 19 volatile u8 interrupts; 20 volatile u8 watchdog; 21 volatile u8 control; 22 volatile u8 sec; 23 volatile u8 min; 24 volatile u8 hour; 25 volatile u8 day; 26 volatile u8 date; 27 volatile u8 month; 28 volatile u8 year; 29 }; 30 31 #define M48T37_RTC_SET 0x80 32 #define M48T37_RTC_STOPPED 0x80 33 #define M48T37_RTC_READ 0x40 34 35 #endif /* _ASM_M48T37_H */ 36