1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * RTC definitions for DECstation style attached Dallas DS1287 chip. 4 * 5 * Copyright (C) 1998, 2001 by Ralf Baechle 6 * Copyright (C) 1998 by Harald Koerfgen 7 * Copyright (C) 2002, 2005 Maciej W. Rozycki 8 */ 9#ifndef __ASM_MIPS_DEC_RTC_DEC_H 10#define __ASM_MIPS_DEC_RTC_DEC_H 11 12#include <linux/types.h> 13#include <asm/addrspace.h> 14#include <asm/dec/system.h> 15 16extern volatile u8 *dec_rtc_base; 17 18#define ARCH_RTC_LOCATION 19 20#define RTC_PORT(x) CPHYSADDR((long)dec_rtc_base) 21#define RTC_IO_EXTENT dec_kn_slot_size 22#define RTC_IOMAPPED 0 23#undef RTC_IRQ 24 25#define RTC_DEC_YEAR 0x3f /* Where we store the real year on DECs. */ 26 27static inline unsigned char CMOS_READ(unsigned long addr) 28{ 29 return dec_rtc_base[addr * 4]; 30} 31 32static inline void CMOS_WRITE(unsigned char data, unsigned long addr) 33{ 34 dec_rtc_base[addr * 4] = data; 35} 36 37#define RTC_ALWAYS_BCD 0 38 39#endif /* __ASM_MIPS_DEC_RTC_DEC_H */ 40