| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Registers for the SGS-Thomson M48T37 Timekeeper RAM chip |
| */ |
| #ifndef _ASM_M48T37_H |
| #define _ASM_M48T37_H |
| |
| #include <linux/spinlock.h> |
| |
| extern spinlock_t rtc_lock; |
| |
| struct m48t37_rtc { |
| volatile u8 pad[0x7ff0]; /* NVRAM */ |
| volatile u8 flags; |
| volatile u8 century; |
| volatile u8 alarm_sec; |
| volatile u8 alarm_min; |
| volatile u8 alarm_hour; |
| volatile u8 alarm_data; |
| volatile u8 interrupts; |
| volatile u8 watchdog; |
| volatile u8 control; |
| volatile u8 sec; |
| volatile u8 min; |
| volatile u8 hour; |
| volatile u8 day; |
| volatile u8 date; |
| volatile u8 month; |
| volatile u8 year; |
| }; |
| |
| #define M48T37_RTC_SET 0x80 |
| #define M48T37_RTC_STOPPED 0x80 |
| #define M48T37_RTC_READ 0x40 |
| |
| #endif /* _ASM_M48T37_H */ |
